swimJohn Duma
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 22.20 | Sectionals ✓+2.51s to US Open | 2025-12-11 | 2025 Riley Eaton Holiday Invitational |
| 100 Freestyle | SCY | 52.51 | +4.02s to Sectionals | 2026-03-08 | 2026 PV Short Course Open Championshipsvenue |
| 200 Freestyle | SCY | 1:47.58 | +1.29s to Sectionals | 2026-03-06 | 2026 PV Short Course Open Championshipsvenue |
| 500 Freestyle | SCY | 4:58.37 | +10.98s to Sectionals | 2026-01-16 | 2026 RMSC January Intrasquad Meetvenue |
| 1000 Freestyle | SCY | 10:33.35 | +33.86s to Sectionals | 2023-10-27 | NOVA Senior Classic |
| 50 Backstroke | SCY | 23.98 | +2.49s to US Open | 2025-12-11 | 2025 Riley Eaton Holiday Invitational |
| 100 Backstroke | SCY | 51.04 | Sectionals ✓+4.05s to US Open | 2025-12-11 | 2025 Riley Eaton Holiday Invitational |
| 200 Backstroke | SCY | 1:50.77 | Sectionals ✓+7.48s to US Open | 2025-12-11 | 2025 Riley Eaton Holiday Invitational |
| 50 Breaststroke | SCY | 30.34 | +5.95s to US Open | 2023-01-21 | 2023 ISCA National Club Championshipsvenue |
| 100 Breaststroke | SCY | 1:03.70 | +2.21s to Sectionals | 2025-11-01 | NOVA Senior Classicvenue |
| 200 Breaststroke | SCY | 2:26.11 | +11.12s to Sectionals | 2023-01-22 | 2023 ISCA National Club Championshipsvenue |
| 100 Butterfly | SCY | 53.50 | +0.31s to Sectionals | 2025-12-11 | 2025 Riley Eaton Holiday Invitational |
| 100 Individual Medley | SCY | 56.00 | 2024-03-23 | 2024 SwimRVA Shamrock Showdownvenue | |
| 200 Individual Medley | SCY | 1:59.13 | Sectionals ✓+13.74s to US Open | 2026-02-21 | 2026 MPSSAA_4A3AStateSwimChampsfast pool |
| 400 Individual Medley | SCY | 4:22.49 | +7.40s to Sectionals | 2024-03-22 | 2024 SwimRVA Shamrock Showdownvenue |
| 50 Freestyle | LCM | 26.18 | +0.69s to Sectionals | 2026-05-29 | Maryland State LC Championshipvenue |
| 100 Freestyle | LCM | 57.86 | +2.37s to Sectionals | 2025-05-15 | 2025 EZ LC Speedo Super Sectionalvenue |
| 200 Freestyle | LCM | 2:05.86 | +4.57s to Sectionals | 2025-05-16 | 2025 EZ LC Speedo Super Sectionalvenue |
| 400 Freestyle | LCM | 4:47.38 | +29.79s to Sectionals | 2024-05-18 | 2024 EZ LC Speedo Super Sectionalvenue |
| 50 Backstroke | LCM | 27.58 | +1.49s to US Open | 2026-07-10 | 2026 PV LC Open Championshipsvenue |
| 100 Backstroke | LCM | 1:00.02 | Sectionals ✓+3.13s to US Open | 2025-05-17 | 2025 EZ LC Speedo Super Sectionalvenue |
| 200 Backstroke | LCM | 2:11.12 | Sectionals ✓+6.53s to US Open | 2025-05-18 | 2025 EZ LC Speedo Super Sectionalvenue |
| 100 Breaststroke | LCM | 1:19.05 | +9.36s to Sectionals | 2024-05-16 | 2024 EZ LC Speedo Super Sectionalvenue |
| 50 Butterfly | LCM | 28.26 | +3.37s to US Open | 2026-07-09 | 2026 PV LC Open Championshipsvenue |
| 100 Butterfly | LCM | 1:01.35 | +1.16s to Sectionals | 2025-05-16 | 2025 EZ LC Speedo Super Sectionalvenue |
| 200 Individual Medley | LCM | 2:18.05 | +1.86s to Sectionals | 2025-05-15 | 2025 EZ LC Speedo Super Sectionalvenue |
| 400 Individual Medley | LCM | 5:11.08 | +21.19s to Sectionals | 2024-01-13 | NOVA LC Winter Invitationalvenue |
National cuts (Sectionals → Nationals) are the current-season meet qualifying times for the swimmer's zone and age group; ✓ marks the hardest cut already achieved.
Pool tags are a venue speed heuristic (median deviation of all swims there vs each swimmer's typical time) — see the venue page for the method.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.88 | flat | 200 Free Relay | 2023-01-20 | 2023 ISCA National Club Championships |
| 100 Freestyle | SCY | 49.37 | flat | 400 Free Relay | 2026-02-09 | 2026 METRO Championships |
| 100 Freestyle | SCY | 49.02 | flying | 400 Free Relay (leg 2) | 2026-02-21 | 2026 MPSSAA_4A3AStateSwimChamps |
| 50 Backstroke | SCY | 24.29 | flat | 200 Medley Relay | 2026-02-21 | 2026 MPSSAA_4A3AStateSwimChamps |
| 100 Backstroke | SCY | 57.00 | flat | 400 Medley Relay | 2023-01-21 | 2023 ISCA National Club Championships |
| 50 Backstroke | LCM | 27.68 | flat | 200 Medley Relay | 2026-05-30 | Maryland State LC Championship |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
PR splits
100 Freestyle SCY 52.51
Front half 25.20s · back half 27.31s
200 Freestyle SCY 1:47.58
Front half 51.93s · back half 55.65s
500 Freestyle SCY 4:58.37
Front half 145.31s · back half 153.06s
100 Backstroke SCY 51.04 split/total mismatch
Front half 24.91s · back half 26.13s
200 Backstroke SCY 1:50.77 split/total mismatch
100 Breaststroke SCY 1:03.70
Front half 30.22s · back half 33.48s
200 Breaststroke SCY 2:26.11
Front half 69.26s · back half 76.85s
100 Butterfly SCY 53.50 split/total mismatch
Front half 25.70s · back half 27.80s
100 Individual Medley SCY 56.00
Front half 25.86s · back half 30.14s
200 Individual Medley SCY 1:59.13
Front half 55.21s · back half 63.92s
400 Individual Medley SCY 4:22.49
Front half 126.38s · back half 136.11s
200 Freestyle LCM 2:05.86
Front half 60.99s · back half 64.87s
400 Freestyle LCM 4:47.38
Front half 140.40s · back half 146.98s
200 Backstroke LCM 2:11.12 RT 0.58s
Front half 63.75s · back half 67.37s
100 Breaststroke LCM 1:19.05
Front half 37.44s · back half 41.61s
200 Individual Medley LCM 2:18.05
Front half 63.13s · back half 74.92s
400 Individual Medley LCM 5:11.08
Front half 148.49s · back half 162.59s
Reaction time
From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.
Swim history
Every recorded swim, newest first
| Date | Event | Course | Time | Age | Round | Meet |
|---|
Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.
Progression
Faster times are higher. One card per event, all courses & history.