USPSA L5809 · PA
Bill Romig
CityMuncy
StatePennsylvania
CountryUnited States
Aug 12, 2023 – Sep 11, 2026
OpenMLimitedMLimited OpticsBCarry OpticsB
Rankings last 12 months
Limited
–
1 match; needs 4 in fields of 8+
Record Rating in detail why the number is what it is
Open #151 of 1,797 worldwide
Stage skill
105.2
hit factor as a percent of the pace that wins an average Open field, fitted from 375 stage results since Oct 10, 2024
Blow-up deduction
−0.6
2 zeroed stages, a rate of 0.5% after a light pull toward the division; a zeroed stage scores nothing, so the skill is cut by that share
Record Rating
104.6 ±4.2
interval 96.7 to 113.2 at two deviations; personal stage noise 10.9% per stage; US level known to ±0.6%
Ordered by
100.5
rating less one deviation; a short record must be exceptional to outrank a long one
Avg % rank
#82
where a plain average of match percent (95.4%) would place them
Class rank
#92
USPSA class order (M), ties by avg %
Every match in the fit, oldest first. Percent is the raw percent of the division winner. Versus stages is how far the day's hit factors ran above or below the measured difficulty of the stages, averaged; best and worst are the single stages. Flagged stages fell more than two personal deviations from expectation and were given reduced weight. Skill is the fitted skill at that match on the random-walk path; the last value, before the blow-up deduction, is the stage skill above.
| Date | Match | Field | Stages | Percent | Vs stages | Best / worst | Flagged | Skill |
|---|---|---|---|---|---|---|---|---|
| Oct 20, 2024 | Hallstead Mid 29 USPSA Oct 20, 2024 | 8 | 6 | 100.0 | -13.0% | +19 / -52 | 2 | 102.8 |
| May 17, 2025 | WSPS MAY 2025 USPSA | 8 | 7 | 75.9 | – | – | 0 | 104.1 |
| May 18, 2025 | HALLSTEAD MID29 USPSA May 18, 2025 | 8 | 6 | 96.0 | -6.2% | +8 / -31 | 2 | 104.1 |
| May 22, 2025 | 2025 Mid Atlantic Sectional | 86 | 13 | 81.5 | -3.3% | +38 / -56 | 2 | 104.2 |
| Jun 7, 2025 | KSA USPSA 7 June 2025 | 3 | 5 | 100.0 | – | – | 0 | 104.1 |
| Jun 8, 2025 | MID11 Factoryville USPSA JUNE 8 2025 | 14 | 6 | 99.5 | -2.5% | +6 / -8 | 0 | 104.1 |
| Jun 13, 2025 | MSC USPSA June 13th, 2025 | 4 | 5 | 89.5 | – | – | 0 | 104.2 |
| Jun 21, 2025 | WSPS JUNE 2025 USPSA | 10 | 7 | 94.8 | +2.0% | +24 / -9 | 0 | 104.9 |
| Jun 29, 2025 | Ontelaunee USPSA June 29 2025 | 46 | 10 | 85.1 | +6.3% | +26 / -4 | 1 | 105.4 |
| Jul 9, 2025 | 2025 BELT Area 8 Championship Presented by S3 Carts | 87 | 15 | 78.4 | -2.5% | +24 / -31 | 2 | 104.9 |
| Jul 17, 2025 | SIG SAUER Area 7 USPSA Championship Presented by S3 Range Carts | 79 | 13 | 74.2 | -9.5% | +19 / -53 | 2 + 1 zero | 104.8 |
| Jul 27, 2025 | Ontelaunee USPSA July 2025 | 26 | 10 | 98.1 | -1.2% | +19 / -21 | 1 | 105.2 |
| Aug 6, 2025 | 2025 Excaliber Ammunition Area 5 Championship Presented by D2 Customs! | 73 | 15 | 73.6 | -4.2% | +19 / -37 | 2 | 105.9 |
| Aug 16, 2025 | WSPS AUGUST 2025 USPSA | 3 | 6 | 100.0 | – | – | 0 | 106.7 |
| Aug 17, 2025 | HALLSTEAD MID29 USPSA Aug 17, 2025 | 12 | 6 | 100.0 | +16.8% | +75 / -26 | 3 | 106.6 |
| Aug 20, 2025 | 2025 Excaliber Ammunition US IPSC National Championship Presented by Belt | 154 | 25 | 71.6 | -4.0% | +10 / -35 | 3 | 106.2 |
| Aug 30, 2025 | KSA USPSA August bonus match! | 3 | 7 | 100.0 | – | – | 0 | 105.7 |
| Sep 5, 2025 | Western Pa Section by Muhlenkamp | 41 | 11 | 79.5 | -6.8% | +12 / -33 | 2 | 104.9 |
| Sep 7, 2025 | WBRP Monthly USPSA | 9 | 7 | 100.0 | -0.2% | +11 / -14 | 0 | 104.8 |
| Sep 14, 2025 | MID11 Factoryville USPSA SEP 14 2025 | 15 | 6 | 87.4 | -3.6% | +46 / -39 | 2 | 104.7 |
| Sep 20, 2025 | MSC USPSA October 20th, 2025 | 7 | 6 | 95.4 | – | – | 0 | 104.7 |
| Sep 26, 2025 | 2025 Go Fast Don't Suck Maryland State USPSA Championship | 48 | 10 | 86.5 | +0.3% | +23 / -12 | 0 | 105.0 |
| Oct 12, 2025 | MID11 Factoryville USPSA OCT 12 2025 | 13 | 6 | 92.6 | -30.4% | +5 / -78 | 3 | 106.2 |
| Oct 18, 2025 | MSC USPSA October 18th MONSTER MATCH | 5 | 7 | 100.0 | – | – | 0 | 106.9 |
| Oct 18, 2025 | Hallstead USPSA Oct 19, 2025 | 9 | 6 | 100.0 | +6.3% | +29 / -10 | 2 | 106.9 |
| Oct 22, 2025 | Vortex Race Gun Nationals Presented by Berry Bullets | 185 | 20 | 75.6 | +0.6% | +19 / -19 | 0 | 107.1 |
| Mar 1, 2026 | WBRP Monthly USPSA | 3 | 6 | 100.0 | – | – | 0 | 108.0 |
| Mar 8, 2026 | MID11 Factoryville USPSA MARCH 8 2026 | 9 | 7 | 100.0 | +1.0% | +15 / -7 | 0 | 108.1 |
| Mar 15, 2026 | Hallstead USPSA Mar 15, 2026 | 9 | 6 | 100.0 | +3.1% | +31 / -15 | 1 | 108.2 |
| Mar 21, 2026 | WSPS MARCH 2026 USPSA | 4 | 6 | 100.0 | – | – | 0 | 108.1 |
| Mar 22, 2026 | Ontelaunee USPSA March 22 2026 | 32 | 10 | 94.3 | -8.3% | +17 / -49 | 2 | 108.1 |
| Mar 29, 2026 | WBRP Monthly USPSA | 6 | 6 | 100.0 | – | – | 0 + 1 zero | 108.4 |
| Apr 17, 2026 | MSC USPSA April 18th, 2026 | 7 | 6 | 100.0 | – | – | 0 | 107.4 |
| Apr 19, 2026 | Hallstead USPSA Apr 19, 2026 | 8 | 6 | 100.0 | +3.6% | +26 / -18 | 1 | 107.3 |
| Apr 26, 2026 | Ontelaunee USPSA April 26 2026 | 29 | 10 | 91.2 | -6.2% | +17 / -21 | 2 | 106.5 |
| May 10, 2026 | MID11 Factoryville USPSA MAY 10 2026 | 10 | 6 | 100.0 | -0.9% | +3 / -7 | 0 | 106.6 |
| May 16, 2026 | MSC USPSA MID31 | 5 | 6 | 100.0 | – | – | 0 | 106.8 |
| May 17, 2026 | Hallstead USPSA May 17, 2026 | 13 | 6 | 100.0 | +2.7% | +13 / -9 | 0 | 106.8 |
| Jun 14, 2026 | MID11 Factoryville USPSA JUNE 14 2026 | 12 | 7 | 99.3 | -6.8% | +13 / -25 | 2 | 106.0 |
| Jun 20, 2026 | MSC USPSA MID31 | 6 | 6 | 100.0 | – | – | 0 | 106.3 |
| Jun 21, 2026 | HALLSTEAD USPSA Jun 21, 2026 | 12 | 6 | 100.0 | +3.7% | +24 / -8 | 0 | 106.4 |
| Jun 28, 2026 | Ontelaunee USPSA June 28 2026 | 40 | 10 | 100.0 | +6.6% | +18 / -3 | 0 | 106.7 |
| Jul 12, 2026 | MID11 Factoryville USPSA JULY 12 2026 | 11 | 6 | 88.6 | -9.1% | +1 / -25 | 1 | 105.4 |
| Jul 26, 2026 | Ontelaunee USPSA July 26 2026 | 25 | 10 | 93.2 | -2.8% | +14 / -35 | 1 | 105.4 |
| Sep 11, 2026 | Western PA Sectional by Muhlenkamp | 36 | 10 | 91.0 | -0.5% | +19 / -19 | 0 | 105.2 |
How Record Rating works explains each step.
Matches
88
Division wins
35
Podiums
51
Avg % of winner
93.4
Majors
11
Form, last 15
Career percent of the division winner, every match
Best finishes fields of 10 or more
- Jun 28, 2026Ontelaunee USPSA June 28 2026Open · 1 of 40 · 100%
- Jun 21, 2026HALLSTEAD USPSA Jun 21, 2026Open · 1 of 12 · 100%
- May 17, 2026Hallstead USPSA May 17, 2026Open · 1 of 13 · 100%
- May 10, 2026MID11 Factoryville USPSA MAY 10 2026Open · 1 of 11 · 100%
- Mar 8, 2026MID11 Factoryville USPSA MARCH 8 2026Open · 1 of 10 · 100%
Head to head same division, 3+ meetings
- Jerry GregRecord Rating 52.4 · #1,549 of 1,797 in Open33–033 met
- Young YuRecord Rating 85.3 · #555 of 1,797 in Open30–131 met
- Barry RuaneRecord Rating 83.6 · #657 of 1,797 in Open27–330 met
- Donald SeigleRecord Rating 86.2 · #554 of 1,797 in Open25–025 met
- Jake HolevinskiRecord Rating 93.5 · #378 of 1,797 in Open20–323 met
- Nathan BlaedeRecord Rating 93.3 · #359 of 1,797 in Open17–421 met
- Blaise Cornell-d'EchertRecord Rating 71.1 · #1,055 of 1,797 in Open20–020 met
- Jake HolevinskiRecord Rating 97.2 · #374 of 1,797 in Open12–618 met
Match history
-
Sep 11, 2026Western PA Sectional by MuhlenkampPA · Level IIOpen M7of 3691.0
-
Jul 26, 2026Open M2of 2593.2
-
Jul 12, 2026Open M3of 1188.6
-
Jun 28, 2026Open M1of 40100.0
-
Jun 21, 2026HALLSTEAD USPSA Jun 21, 2026HallsteadOpen M1of 12100.0
-
Jun 20, 2026Open M2of 6100.0
-
Jun 14, 2026Open M2of 1299.3
-
May 17, 2026Hallstead USPSA May 17, 2026HallsteadOpen M1of 13100.0
-
May 16, 2026Open M1of 5100.0
-
May 10, 2026Open M1of 11100.0
-
Apr 26, 2026Open M4of 3091.2
-
Apr 19, 2026Open M1of 8100.0
-
Apr 17, 2026MSC USPSA April 18th, 2026Mainville Sportsmen's ClubOpen M1of 7100.0
-
Apr 12, 2026Limited M1of 3100.0
-
Mar 29, 2026Open MASTER1of 6100.0
-
Mar 22, 2026Open M3of 3294.3
-
Mar 21, 2026Open M1of 4100.0
-
Mar 15, 2026Open M1of 9100.0
-
Mar 8, 2026Open M1of 10100.0
-
Mar 1, 2026Open MASTER1of 3100.0
-
Oct 22, 2025Vortex Race Gun Nationals Presented by Berry BulletsWA · Level IIIOpen M64of 19175.6
-
Oct 18, 2025MSC USPSA October 18th MONSTER MATCHMainville Sportsmen's ClubOpen1of 5100.0
-
Oct 18, 2025Hallstead USPSA Oct 19, 2025HallsteadOpen M1of 9100.0
-
Oct 12, 2025Open M6of 1392.6
-
Sep 26, 2025Open M5of 4886.5
-
Sep 20, 2025MSC USPSA October 20th, 2025Mainville Sportsmen's ClubOpen M2of 895.4
-
Sep 14, 2025Open M5of 1587.4
-
Sep 7, 2025Open MASTER1of 9100.0
-
Sep 5, 2025Western Pa Section by MuhlenkampPA · Level IIOpen M8of 4179.5
-
Aug 30, 2025Open M1of 4100.0
-
Aug 20, 2025Open51of 15771.6
-
Aug 17, 2025HALLSTEAD MID29 USPSA Aug 17, 2025HallsteadOpen M1of 12100.0
-
Aug 16, 2025Open M1of 3100.0
-
Aug 6, 2025Open M22of 7473.6
-
Jul 27, 2025Open M2of 2698.1
-
Jul 17, 2025SIG SAUER Area 7 USPSA Championship Presented by S3 Range CartsSig Sauer Academy · NH · Level IIIOpen M17of 8174.2
-
Jul 9, 20252025 BELT Area 8 Championship Presented by S3 CartsGreater Pittsburgh Gun Club · Level IIIOpen M25of 9178.4
-
Jul 5, 2025Open M1of 1100.0
-
Jun 29, 2025Open M4of 4785.1
-
Jun 21, 2025Open M2of 1194.8
-
Jun 13, 2025MSC USPSA June 13th, 2025Mainville Sportsmen's ClubOpen M2of 489.5
-
Jun 8, 2025Open M2of 1599.5
-
Jun 7, 2025Open M1of 3100.0
-
May 22, 20252025 Mid Atlantic Sectional· Level IIOpen M13of 9081.5
-
May 18, 2025HALLSTEAD MID29 USPSA May 18, 2025HallsteadOpen M3of 896.0
-
May 17, 2025Open M5of 875.9
-
May 11, 2025Limited Optics B1of 7100.0
-
May 10, 2025MSC USPSA May 10th, 2025Mainville Sportsmen's ClubLimited Optics M1of 6100.0
-
May 3, 2025Limited Optics M1of 7100.0
-
Apr 27, 2025Limited Optics M1of 39100.0
-
Apr 20, 2025HALLSTEAD MID29 USPSA Apr 20, 2025HallsteadLimited Optics M2of 893.0
-
Apr 19, 2025Limited Optics M2of 2796.9
-
Apr 13, 2025Limited Optics M1of 15100.0
-
Mar 23, 2025Limited Optics M4of 4788.6
-
Mar 16, 2025HALLSTEAD MID29 USPSA Mar 16, 2025HallsteadLimited Optics A1of 9100.0
-
Mar 15, 2025Limited Optics A1of 22100.0
-
Mar 9, 2025Limited Optics A1of 10100.0
-
Dec 15, 2024HALLSTEAD MID29 USPSA Dec 15, 2024HallsteadLimited Optics A2of 692.4
-
Nov 17, 2024HALLSTEAD MID29 USPSA Nov 17, 2024HallsteadLimited Optics A1of 4100.0
-
Nov 10, 2024MID11 USPSA Nov 10, 2024Factoryville Sportsman's ClubLimited Optics A2of 1299.8
-
Nov 2, 2024Open M1of 3100.0
-
Oct 20, 2024Hallstead Mid 29 USPSA Oct 20, 2024HallsteadOpen A1of 8100.0
-
Oct 13, 2024MID11 USPSA Oct 13, 2024Factoryville Sportsman's ClubLimited Optics A2of 669.1
-
Sep 15, 2024Hallstead MID29 USPSA Sep 15, 2024HallsteadOpen M1of 10100.0
-
Sep 14, 2024MSC USPSA September 14th 2023Mainville Sportsmen's ClubLimited B1of 2100.0
-
Sep 14, 2024MSC USPSA September 14th 2023Mainville Sportsmen's ClubOpen M1of 1100.0
-
Sep 8, 2024MID11 USPSA Sep 08, 2024Factoryville Sportsman's ClubOpen M1of 15100.0
-
Aug 27, 2024Western PA Section Championship Presented By MuhlenkampGreater Pittsburgh Gun Club · Level IIOpen M8of 3380.4
-
Aug 18, 2024York Practical Shooters USPSA Aug 18, 2024York Practical ShootersOpen M6of 1371.1
-
Aug 11, 2024MID11 USPSA Aug 11, 2024Factoryville Sportsman's ClubOpen A1of 13100.0
-
Aug 4, 2024WBRP USPSAWBRPOpen A2of 1197.2
-
Aug 3, 2024Open A1of 1100.0
-
Jul 27, 2024Ontelaunee USPSA July 2024Ontelaunee Rod & Gun ClubOpen A3of 3484.5
-
Jul 18, 20242024 Sig Sauer Area 7 Championship presented by S3 Range CartsSig Sauer Academy · NH · Level IIIOpen A12of 6788.6
-
Jul 14, 2024MID11 USPSA Jul 14, 2024Factoryville Sportsman's ClubOpen A3of 1987.0
-
Jul 6, 2024Open A3of 384.5
-
Jul 5, 2024MSC USPSA July 13th, 2024Mainville Sportsmen's ClubOpen A1of 2100.0
-
Jun 21, 2024Ontelaunee USPSA June 2024Ontelaunee Rod & Gun ClubOpen A2of 2394.3
-
Jun 15, 2024Open A2of 779.2
-
Jun 5, 2024Area 8 Championship Sponsored by D2 CustomsGreater Pittsburgh Gun Club · PA · Level IIIOpen A44of 7665.3
-
Jun 1, 2024Open A1of 2100.0
-
May 4, 2024Carry Optics B2of 1496.1
-
Apr 20, 2024Carry Optics B2of 2696.5
-
Apr 13, 2024MSC USPSA April 13th, 2024Mainville Sportsmen's ClubLimited Optics B2of 895.9
-
Mar 24, 2024Ontelaunee USPSA March 2024Ontelaunee Rod & Gun ClubCarry Optics U2of 4185.6
-
Sep 9, 2023MSC USPSA Sep 9th 2023Mainville Sportsman's ClubLimited Optics B1of 3100.0
-
Aug 19, 2023Open A2of 876.4
-
Aug 12, 2023MSC USPSA August 12, 2023Mainville Sportsmans ClubOpen A1of 1100.0
Classifier history 98 runs
- DateClassifierDivisionHit factorTimeHits
-
Jul 26, 2026Open11.593.28s6A2C
-
Jul 12, 2026Open10.209.61s16A7C1M
-
Jul 12, 2026Open7.198.90s8A6C
-
Jun 28, 2026Open8.477.56s10A3C1D
-
Jun 28, 2026Open10.096.84s13A1C
-
Jun 21, 2026Open9.677.03s12A2C
-
Jun 21, 2026Open8.637.53s9A5C
-
Jun 20, 2026Open7.058.09s9A3C
-
Jun 20, 2026Open9.914.64s6A4C
-
Jun 14, 2026Open8.504.47s6A2C
-
Jun 14, 2026Open7.836.26s9A1C
-
May 17, 2026Open10.914.86s7A4C1D
-
May 16, 2026Open10.338.13s12A6C
-
May 10, 2026Open9.408.30s14A2C
-
Apr 26, 2026Open11.553.03s7A0C
-
Apr 26, 2026Open7.309.31s12A4C1D1M
-
Apr 19, 2026Open8.6612.93s18A5C1D
-
Apr 17, 2026Open9.167.42s12A2C
-
Apr 12, 2026Limited4.6013.47s10A7C1D1M
-
Mar 29, 2026Open0.002.41s4A0C4M
-
Mar 22, 2026Open4.537.95s6A8C2D3P
-
Mar 22, 2026Open6.897.84s8A3C1D
-
Mar 21, 2026Open10.758.09s15A3C
-
Mar 15, 2026Open6.8416.38s18A5C1D
-
Mar 8, 2026Open9.127.13s11A2C1D
-
Mar 8, 2026Open10.962.92s4A3C
-
Mar 1, 2026Open6.134.24s4A1C1D
-
Oct 18, 2025Open8.949.73s15A3C
-
Oct 18, 2025Open6.8414.03s18A1C1D
-
Oct 18, 2025Open9.149.30s13A5C
-
Oct 12, 2025Open7.7712.48s9A11C4D
-
Sep 20, 2025Open6.726.55s12A1C1M1NS
-
Sep 20, 2025Open4.695.97s8A2C2M
-
Sep 14, 2025Open12.054.98s12A0C
-
Sep 7, 2025Open4.6114.09s11A7C1D1M1P
-
Aug 30, 2025Open7.435.79s9A2C1M
-
Aug 17, 2025Open10.886.34s7A8C1D
-
Jul 5, 2025Open7.3315.42s19A4C1D
-
Jul 5, 2025Open12.153.21s7A1C
-
Jun 29, 2025Open10.874.97s8A3C1D
-
Jun 29, 2025Open7.976.15s9A1C
-
Jun 21, 2025Open8.229.61s9A8C1D
-
Jun 13, 2025Open4.376.86s8A2C1D1M1NS
-
Jun 8, 2025Open9.266.91s10A3C1D
-
Jun 7, 2025Open9.128.11s12A3C1D
-
May 18, 2025Open9.568.26s13A2C3D
-
May 17, 2025Open9.093.30s6A0C
-
May 11, 2025Limited Optics8.127.14s15A1C2P
-
May 10, 2025Limited Optics8.745.95s8A4C
-
May 10, 2025Limited Optics12.109.59s22A2C
-
May 3, 2025Limited Optics5.4817.53s12A12C
-
May 3, 2025Limited Optics11.553.03s7A0C
-
Apr 27, 2025Limited Optics10.002.90s4A3C
-
Apr 27, 2025Limited Optics8.977.36s12A5C1D1NS
-
Apr 20, 2025Limited Optics6.4114.04s15A5C
-
Apr 19, 2025Limited Optics10.375.40s10A2C
-
Apr 13, 2025Limited Optics9.145.69s8A4C
-
Mar 23, 2025Limited Optics3.036.27s5A4C2D1M1P
-
Mar 16, 2025Limited Optics12.423.22s8A0C
-
Mar 15, 2025Limited Optics9.997.41s13A3C
-
Mar 9, 2025Limited Optics5.377.26s8A3C1NS
-
Dec 15, 2024Limited Optics11.265.15s11A1C
-
Nov 17, 2024Limited Optics75.000.00s12A8C1D1P
-
Nov 10, 2024Limited Optics9.177.85s12A4C
-
Nov 10, 2024Limited Optics3.968.58s6A8C2NS
-
Nov 10, 2024Limited Optics8.626.73s11A1C
-
Oct 20, 2024Open2.7623.20s15A3C2M
-
Oct 13, 2024Limited Optics6.777.39s10A3C1D1NS
-
Sep 15, 2024Open7.664.57s5A2C1D
-
Sep 14, 2024Limited8.1811.12s17A5C1D1M
-
Sep 14, 2024Open8.1610.42s18A5C1M1NS
-
Sep 8, 2024Open4.4219.02s8A12C3D1M
-
Aug 18, 2024Open14.182.82s8A0C
-
Aug 18, 2024Open0.717.06s7A2C1D2M2NS
-
Aug 11, 2024Open12.005.25s7A7C
-
Aug 4, 2024Open5.4813.87s14A1C1D
-
Aug 3, 2024Open11.128.99s20A0C
-
Aug 3, 2024Open9.727.92s13A3C
-
Jul 27, 2024Open10.255.17s7A4C1D
-
Jul 27, 2024Open10.816.94s11A5C
-
Jul 14, 2024Open8.426.53s9A2C1D
-
Jul 14, 2024Open9.306.56s9A3C2D
-
Jul 6, 2024Open7.077.35s4A8C
-
Jul 6, 2024Open8.633.36s5A1C
-
Jul 5, 2024Open9.977.42s10A6C
-
Jun 21, 2024Open8.0310.83s15A3C
-
Jun 21, 2024Open6.4213.09s12A6C
-
Jun 15, 2024Open9.216.08s8A4C
-
Jun 1, 2024Open4.583.71s3A3C1P
-
Jun 1, 2024Open9.717.21s10A7C1D1NS
-
May 4, 2024Carry Optics6.618.17s7A6C1D
-
May 4, 2024Carry Optics9.723.19s5A2C
-
Apr 13, 2024Limited Optics5.285.11s7A4C1M1NS
-
Mar 24, 2024Carry Optics6.956.33s9A3C1NS
-
Mar 24, 2024Carry Optics8.845.88s8A4C
-
Sep 9, 2023Limited Optics7.226.65s7A4C1D
-
Aug 19, 2023Open8.1513.74s16A8C
-
Aug 12, 2023Open5.2212.64s10A6C1D1M