swimMarcus Sementa
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.21 | AA+0.52s to AAA | 2025-12-05 | 2025 NE YNS Reid Sacco Prelims Finals Invite |
| 100 Freestyle | SCY | 52.12 | A+0.13s to AA | 2026-02-28 | 2026 NE CRIM 15-18 AG Championships venue |
| 200 Freestyle | SCY | 1:51.08 | AA+2.39s to AAA | 2025-12-05 | 2025 NE YNS Reid Sacco Prelims Finals Invite |
| 500 Freestyle | SCY | 5:05.31 | AA+9.62s to AAA | 2025-10-10 | 2025 NE CRA October Distance & Specialty Meet |
| 1000 Freestyle | SCY | 10:46.06 | A+2.27s to AA | 2026-05-09 | 2026 NE STRM Spring Splash w/Distance venue |
| 50 Backstroke | SCY | 30.12 | BB+2.13s to A | 2025-10-04 | 2025 NE STRM A Harvest Classic - copied venue |
| 100 Backstroke | SCY | 1:03.35 | BB+3.76s to A | 2025-11-16 | 2025 NECRA Nov Distance & Specialty Meet - co venue |
| 200 Backstroke | SCY | 2:23.99 | B+3.00s to BB | 2024-12-07 | 2024 NE YNS Reid Sacco Invitational slow pool |
| 50 Breaststroke | SCY | 38.63 | +1.14s to B | 2024-05-11 | 2024 NE STRM Spring Splash with Distance venue |
| 100 Breaststroke | SCY | 1:11.21 | BB+3.82s to A | 2025-12-06 | 2025 NE YNS Reid Sacco Prelims Finals Invite venue |
| 200 Breaststroke | SCY | 2:47.18 | B+7.99s to BB | 2025-02-02 | 2025 NE YNS Silver Championship venue |
| 50 Butterfly | SCY | 25.02 | AAA+0.73s to AAAA | 2026-03-01 | 2026 NE CRIM 15-18 AG Championships venue |
| 100 Butterfly | SCY | 55.13 | AA+1.14s to AAA | 2025-12-05 | 2025 NE YNS Reid Sacco Prelims Finals Invite |
| 200 Butterfly | SCY | 2:11.62 | A+5.13s to AA | 2025-12-05 | 2025 NE YNS Reid Sacco Prelims Finals Invite |
| 100 Individual Medley | SCY | 53.02 | 2025-10-10 | 2025 NE CRA October Distance & Specialty Meet | |
| 200 Individual Medley | SCY | 2:10.12 | A+3.43s to AA | 2026-02-07 | 2026 NE CRA Last Chance February Invite venue |
| 400 Individual Medley | SCY | 4:42.11 | A+9.72s to AA | 2025-11-14 | 2025 NECRA Nov Distance & Specialty Meet - co venue |
| 50 Freestyle | LCM | 26.85 | AA+0.66s to AAA | 2025-08-09 | 2025 EZ LC Age Group Championship fast pool |
| 100 Freestyle | LCM | 58.93 | AA+1.84s to AAA | 2026-06-27 | 2026 NE YNS June Prelims Finals Meet venue |
| 200 Freestyle | LCM | 2:11.18 | AA+5.39s to AAA | 2026-06-28 | 2026 NE YNS June Prelims Finals Meet venue |
| 400 Freestyle | LCM | 4:41.83 | A+1.94s to AA | 2026-05-31 | 2026 NE NSSC May Invitational at Colby fast pool |
| 800 Freestyle | LCM | 10:08.53 | BB+4.64s to A | 2025-07-25 | 2025 NE CRA July LC P/Fand Specialty Meet venue |
| 50 Backstroke | LCM | 33.04 | A+1.25s to AA | 2026-05-17 | 2026 NE YNS May Specialty Meet venue |
| 100 Backstroke | LCM | 1:17.32 | B+1.93s to BB | 2025-05-03 | 2025 NE YNS May Specialty Meet venue |
| 200 Backstroke | LCM | 2:36.92 | BB+5.83s to A | 2026-05-17 | 2026 NE YNS May Specialty Meet venue |
| 100 Breaststroke | LCM | 1:31.23 | B+6.34s to BB | 2026-04-26 | 2026 NE YNS LCM IMX IMR Meet venue |
| 200 Breaststroke | LCM | 3:14.82 | B+9.13s to BB | 2025-06-21 | 2025 NE KCY A Beat the Heat Meet venue |
| 50 Butterfly | LCM | 27.98 | AAA+0.59s to AAAA | 2026-06-27 | 2026 NE YNS June Prelims Finals Meet venue |
| 100 Butterfly | LCM | 1:04.23 | AA+2.54s to AAA | 2026-06-28 | 2026 NE YNS June Prelims Finals Meet venue |
| 200 Butterfly | LCM | 2:28.90 | A+4.61s to AA | 2026-06-27 | 2026 NE YNS June Prelims Finals Meet venue |
| 200 Individual Medley | LCM | 2:16.14 | AAA+2.05s to AAAA | 2025-06-20 | 2025 NE KCY A Beat the Heat Meet |
| 400 Individual Medley | LCM | 5:43.37 | BB+14.08s to A | 2026-05-16 | 2026 NE YNS May Specialty Meet venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.
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 | 24.06 | flat | 200 Free Relay | 2025-03-15 | 2025 NE STRM NEW ENGLAND YMCA CHAMPIONSHIPS |
| 50 Freestyle | SCY | 22.39 | flying | 200 Free Relay (leg 3) | 2025-12-20 | 2026 NE NSSC Senior Championships |
| 50 Freestyle | SCY | 23.48 | flying | 200 Medley Relay (leg 4) | 2025-02-21 | 2025 NE CRA 11-14 SCY Age Group Championship |
| 100 Freestyle | SCY | 51.94 | flat | 400 Free Relay | 2025-02-23 | 2025 NE CRA 11-14 SCY Age Group Championship |
| 100 Freestyle | SCY | 51.03 | flying | 400 Free Relay (leg 3) | 2026-02-27 | 2026 NE CRIM 15-18 AG Championships |
| 100 Freestyle | SCY | 51.04 | flying | 400 Medley Relay (leg 4) | 2026-01-17 | Winterfest 2026 |
| 200 Freestyle | SCY | 1:50.74 | flying | 800 Free Relay (leg 3) | 2026-02-26 | 2026 NE CRIM 15-18 AG Championships |
| 50 Butterfly | SCY | 24.95 | flying | 200 Medley Relay (leg 3) | 2026-01-18 | Winterfest 2026 |
| 100 Freestyle | LCM | 1:01.30 | flat | 400 Free Relay | 2025-07-20 | 2025 NE CS LCM 11-14 Championships |
| 100 Freestyle | LCM | 1:01.08 | flying | 400 Medley Relay (leg 4) | 2025-07-19 | 2025 NE CS LCM 11-14 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 15-16 · LCM
3787 points (6/6 events)
| Event | Time | Points |
|---|---|---|
| 400 FR LCM | 4:41.83 | 702 |
| 200 BK LCM | 2:36.92 | 558 |
| 200 BR LCM | 3:14.82 | 419 |
| 200 FL LCM | 2:28.90 | 647 |
| 200 IM LCM | 2:16.14 | 913 |
| 400 IM LCM | 5:43.37 | 548 |
IMR 15-16 · SCY
3238 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:51.08 | 774 |
| 100 BK SCY | 1:03.35 | 512 |
| 100 BR SCY | 1:11.21 | 531 |
| 100 FL SCY | 55.13 | 763 |
| 200 IM SCY | 2:10.12 | 658 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 52.12
Front half 24.90s · back half 27.22s
200 Freestyle SCY 1:51.08 split/total mismatch
500 Freestyle SCY 5:05.31 split/total mismatch
1000 Freestyle SCY 10:46.06
Front half 314.20s · back half 331.86s
100 Backstroke SCY 1:03.35
Front half 31.36s · back half 31.99s
200 Backstroke SCY 2:23.99
Front half 70.90s · back half 73.09s
100 Breaststroke SCY 1:11.21
Front half 33.52s · back half 37.69s
200 Breaststroke SCY 2:47.18
Front half 80.68s · back half 86.50s
100 Butterfly SCY 55.13 split/total mismatch
Front half 25.17s · back half 29.96s
200 Butterfly SCY 2:11.62 split/total mismatch
100 Individual Medley SCY 53.02 split/total mismatch
Front half 25.19s · back half 27.83s
200 Individual Medley SCY 2:10.12
Front half 61.15s · back half 68.97s
400 Individual Medley SCY 4:42.11
Front half 135.72s · back half 146.39s
100 Freestyle LCM 58.93
Front half 27.61s · back half 31.32s
200 Freestyle LCM 2:11.18
Front half 62.73s · back half 68.45s
400 Freestyle LCM 4:41.83
Front half 142.31s · back half 139.52s
800 Freestyle LCM 10:08.53
Front half 298.04s · back half 310.49s
100 Backstroke LCM 1:17.32
Front half 37.41s · back half 39.91s
200 Backstroke LCM 2:36.92
Front half 77.19s · back half 79.73s
100 Breaststroke LCM 1:31.23
Front half 42.49s · back half 48.74s
200 Butterfly LCM 2:28.90
Front half 70.65s · back half 78.25s
400 Individual Medley LCM 5:43.37
Front half 166.80s · back half 176.57s
Progression
Faster times are higher. One card per event, all courses & history.