Mark Derkach
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 29.29 | BB+1.20s to A·+7.00s to Sectionals | 2026-05-02 | 2026 MR FREE May Meters Showdown - SCYvenue |
| 100 Freestyle | SCY | 58.32 | AA+2.13s to AAA·+10.03s to Sectionals | 2026-01-16 | 2026 MR LIE Winterfest Invitational |
| 200 Freestyle | SCY | 2:20.75 | BB+7.06s to A·+34.96s to Sectionals | 2026-01-16 | 2026 MR LIE Winterfest Invitationalvenue |
| 500 Freestyle | SCY | 6:11.06 | BB+11.07s to A·+84.97s to Sectionals | 2026-01-01 | Metropolitan Swimming Club |
| 50 Backstroke | SCY | 34.45 | BB+1.76s to A·+8.76s to Sectionals | 2026-01-16 | 2026 MR LIE Winterfest Invitational |
| 100 Backstroke | SCY | 1:13.43 | BB+4.14s to A·+18.34s to Sectionals | 2026-02-08 | 2026 MR FREE Championships Meets Qualifiervenue |
| 200 Backstroke | SCY | 2:31.20 | BB+3.01s to A·+28.91s to Sectionals | 2026-02-08 | 2026 MR FREE Championships Meets Qualifiervenue |
| 50 Breaststroke | SCY | 33.87 | AA+0.58s to AAA·+4.38s to Sectionals | 2024-09-29 | 2024 MR FREE Season Starter |
| 100 Breaststroke | SCY | 1:27.00 | B+1.51s to BB·+24.31s to Sectionals | 2025-11-16 | 2025 MR FREE Freedom IMX Challengevenue |
| 200 Breaststroke | SCY | 3:05.20 | B+2.81s to BB·+45.91s to Sectionals | 2026-02-08 | 2026 MR FREE Championships Meets Qualifiervenue |
| 50 Butterfly | SCY | 31.28 | BB+0.09s to A·+6.99s to Sectionals | 2026-05-02 | 2026 MR FREE May Meters Showdown - SCYvenue |
| 100 Butterfly | SCY | 1:09.47 | BB+0.18s to A·+16.78s to Sectionals | 2026-05-02 | 2026 MR FREE May Meters Showdown - SCYvenue |
| 100 Individual Medley | SCY | 1:06.41 | AA+2.42s to AAA | 2025-01-01 | Metropolitan Swimming Club |
| 200 Individual Medley | SCY | 2:28.19 | A+2.60s to AA·+28.80s to Sectionals | 2025-03-14 | 2025 MR SC Junior Metropolitan Championships |
| 50 Freestyle | SCM | 32.04 | BB+0.95s to A·+6.95s to Sectionals | 2026-05-03 | 2026 MR FREE May Meters Showdown - SCMvenue |
| 100 Freestyle | SCM | 1:09.60 | BB+1.91s to A·+15.21s to Sectionals | 2026-05-03 | 2026 MR FREE May Meters Showdown - SCMvenue |
| 200 Freestyle | SCM | 2:32.89 | BB+5.10s to A·+33.00s to Sectionals | 2026-05-03 | 2026 MR FREE May Meters Showdown - SCMvenue |
| 100 Backstroke | SCM | 1:33.21 | +2.42s to B·+30.22s to Sectionals | 2024-06-08 | 2024 MR FREE Summer Splash Invite (SCM)venue |
| 50 Butterfly | SCM | 35.25 | BB+0.76s to A·+8.06s to Sectionals | 2026-05-03 | 2026 MR FREE May Meters Showdown - SCMvenue |
| 100 Butterfly | SCM | 1:20.87 | BB+4.38s to A·+22.58s to Sectionals | 2026-05-03 | 2026 MR FREE May Meters Showdown - SCMvenue |
| 100 Individual Medley | SCM | 1:31.19 | +0.70s to B | 2024-06-08 | 2024 MR FREE Summer Splash Invite (SCM)venue |
| 200 Individual Medley | SCM | 3:13.59 | B+10.40s to BB·+64.00s to Sectionals | 2024-06-08 | 2024 MR FREE Summer Splash Invite (SCM)venue |
| 50 Freestyle | LCM | 32.76 | BB+0.67s to A·+7.17s to Sectionals | 2026-05-30 | 2026 MR LIE May Spectacular Invitationalvenue |
| 100 Freestyle | LCM | 1:12.17 | BB+1.78s to A·+16.88s to Sectionals | 2026-05-31 | 2026 MR LIE May Spectacular Invitationalvenue |
| 200 Freestyle | LCM | 2:55.13 | B+8.74s to BB·+54.24s to Sectionals | 2024-06-22 | 2024 MR RED Tails International Invitationalvenue |
| 50 Backstroke | LCM | 44.08 | B+2.89s to BB·+13.89s to Sectionals | 2024-06-23 | 2024 MR RED Tails International Invitationalvenue |
| 100 Backstroke | LCM | 1:22.29 | BB+0.40s to A·+17.80s to Sectionals | 2026-05-31 | 2026 MR LIE May Spectacular Invitationalvenue |
| 50 Breaststroke | LCM | 50.31 | +0.52s to B·+16.12s to Sectionals | 2024-07-07 | 2024 MR LIE Summer Sizzler Invitationalvenue |
| 100 Breaststroke | LCM | 1:32.98 | BB+1.69s to A·+20.59s to Sectionals | 2025-05-09 | 2025 MR LIE May Extravaganza Invitational |
| 50 Butterfly | LCM | 34.57 | A+0.98s to AA·+6.78s to Sectionals | 2026-05-29 | 2026 MR LIE May Spectacular Invitational |
| 100 Butterfly | LCM | 1:19.93 | BB+0.44s to A·+19.44s to Sectionals | 2026-05-30 | 2026 MR LIE May Spectacular Invitationalvenue |
| 200 Individual Medley | LCM | 3:07.73 | BB+13.54s to A·+50.04s to Sectionals | 2025-01-01 | Metropolitan Swimming Club |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.
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.
Fastest relay legs
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 31.24 | flying | 200 Free Relay (leg 2) | 2024-12-15 | 34th Annual Winter Championships |
| 50 Backstroke | SCY | 35.21 | flat | 200 Medley Relay | 2024-12-14 | 34th Annual Winter Championships |
| 100 Freestyle | LCM | 1:20.34 | flying | 400 Free Relay (leg 2) | 2024-07-21 | 2024 Metropolitan LC Junior Met Championships |
Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.
IMX / IMR
IMX 11-12 · SCY
2938 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 6:11.06 | 611 |
| 100 BK SCY | 1:13.43 | 531 |
| 100 BR SCY | 1:27.00 | 473 |
| 100 FL SCY | 1:09.47 | 615 |
| 200 IM SCY | 2:28.19 | 708 |
IMR 11-12 · SCY
3323 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:20.75 | 574 |
| 50 BK SCY | 34.45 | 547 |
| 50 BR SCY | 33.87 | 803 |
| 50 FL SCY | 31.28 | 621 |
| 100 IM SCY | 1:06.41 | 778 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
200 Freestyle SCY 2:20.75
Front half 66.09s · back half 74.66s
500 Freestyle SCY 6:11.06
Front half 183.74s · back half 187.32s
100 Backstroke SCY 1:13.43
Front half 35.52s · back half 37.91s
200 Backstroke SCY 2:31.20
Front half 74.04s · back half 77.16s
100 Breaststroke SCY 1:27.00
Front half 41.43s · back half 45.57s
200 Breaststroke SCY 3:05.20
Front half 90.18s · back half 95.02s
100 Butterfly SCY 1:09.47
Front half 32.82s · back half 36.65s
200 Individual Medley SCY 2:28.19 split/total mismatch
100 Freestyle SCM 1:09.60
Front half 21.28s · back half 48.32s
200 Freestyle SCM 2:32.89
Front half 73.97s · back half 78.92s
100 Backstroke SCM 1:33.21
Front half 45.68s · back half 47.53s
100 Butterfly SCM 1:20.87
Front half 38.27s · back half 42.60s
100 Individual Medley SCM 1:31.19
Front half 41.69s · back half 49.50s
200 Individual Medley SCM 3:13.59
Front half 91.32s · back half 102.27s
100 Freestyle LCM 1:12.17
Front half 34.73s · back half 37.44s
200 Freestyle LCM 2:55.13
100 Backstroke LCM 1:22.29
Front half 39.11s · back half 43.18s
50 Butterfly LCM 34.57 split/total mismatch
Front half 48.64s · back half -14.07s
100 Butterfly LCM 1:19.93
Front half 37.91s · back half 42.02s
200 Individual Medley LCM 3:07.73
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.