swimJohan Mattisson
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.23 | AA+0.54s to AAA·+0.84s to Sectionals | 2026-01-12 | WSY Mid Winter Classic |
| 100 Freestyle | SCY | 51.28 | AA+1.49s to AAA·+2.79s to Sectionals | 2026-01-12 | WSY Mid Winter Classic |
| 200 Freestyle | SCY | 1:56.22 | A+2.63s to AA·+9.93s to Sectionals | 2026-01-12 | WSY Mid Winter Classic |
| 500 Freestyle | SCY | 5:46.34 | BB+23.75s to A·+58.95s to Sectionals | 2025-02-06 | SSC Arena Distance Meet |
| 100 Backstroke | SCY | 54.90 | AA+0.31s to AAA·+0.41s to Sectionals | 2026-01-12 | WSY Mid Winter Classic |
| 200 Backstroke | SCY | 2:01.19 | AA+1.90s to AAA·+2.60s to Sectionals | 2026-01-12 | WSY Mid Winter Classic |
| 100 Breaststroke | SCY | 1:05.05 | A+0.46s to AA·+3.56s to Sectionals | 2025-12-09 | MSA Robert Hornsleth Memorial ABBC Meet |
| 200 Breaststroke | SCY | 2:30.30 | BB+3.31s to A·+15.31s to Sectionals | 2024-11-19 | JW Thanksgiving Closed Invite Meet at GCIT |
| 100 Butterfly | SCY | 1:02.33 | BB+3.44s to A·+9.14s to Sectionals | 2024-11-19 | JW Thanksgiving Closed Invite Meet at GCIT |
| 100 Individual Medley | SCY | 1:05.84 | 2024-01-14 | AMS MA Tri State Cupslow pool | |
| 200 Individual Medley | SCY | 2:06.01 | AA+4.82s to AAA·+6.62s to Sectionals | 2026-01-12 | WSY Mid Winter Classic |
| 400 Individual Medley | SCY | 4:50.04 | BB+5.85s to A·+34.95s to Sectionals | 2025-03-17 | MASI Junior SC Championships hosted by LAC |
| 50 Freestyle | LCM | 29.66 | BB+1.07s to A·+4.17s to Sectionals | 2024-05-12 | 2024 NAAC MOTHER'S DAY MEETvenue |
| 100 Freestyle | LCM | 1:08.45 | B+0.96s to BB·+12.96s to Sectionals | 2024-05-11 | 2024 NAAC MOTHER'S DAY MEETvenue |
| 200 Freestyle | LCM | 2:38.79 | B+10.20s to BB·+37.50s to Sectionals | 2024-05-12 | 2024 NAAC MOTHER'S DAY MEETvenue |
| 100 Backstroke | LCM | 1:13.00 | BB+3.41s to A·+11.01s to Sectionals | 2024-05-12 | 2024 NAAC MOTHER'S DAY MEETvenue |
| 200 Backstroke | LCM | 2:45.15 | B+1.46s to BB·+30.36s to Sectionals | 2024-05-11 | 2024 NAAC MOTHER'S DAY MEETvenue |
| 100 Breaststroke | LCM | 1:35.37 | +3.98s to B·+25.68s to Sectionals | 2024-05-11 | 2024 NAAC MOTHER'S DAY MEETvenue |
| 100 Butterfly | LCM | 1:21.78 | +3.19s to B·+21.59s to Sectionals | 2024-05-12 | 2024 NAAC MOTHER'S DAY MEETvenue |
| 200 Individual Medley | LCM | 2:47.65 | B+1.66s to BB·+31.46s to Sectionals | 2024-05-11 | 2024 NAAC MOTHER'S DAY MEETvenue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.
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 | 27.34 | flat | 200 Free Relay | 2024-01-13 | AMS MA Tri State Cup |
| 50 Freestyle | SCY | 25.73 | flying | 200 Medley Relay (leg 4) | 2024-01-14 | AMS MA Tri State Cup |
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 · SCY
3148 points (5/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:46.34 | 507 |
| 200 BK SCY | 2:01.19 | 761 |
| 200 BR SCY | 2:30.30 | 579 |
| 200 IM SCY | 2:06.01 | 724 |
| 400 IM SCY | 4:50.04 | 577 |
| 200 FL SCY | — | 0 |
IMR 15-16 · SCY
3411 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:56.22 | 675 |
| 100 BK SCY | 54.90 | 787 |
| 100 BR SCY | 1:05.05 | 697 |
| 100 FL SCY | 1:02.33 | 528 |
| 200 IM SCY | 2:06.01 | 724 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 51.28
Front half 24.58s · back half 26.70s
200 Freestyle SCY 1:56.22
Front half 54.93s · back half 61.29s
100 Backstroke SCY 54.90
Front half 26.61s · back half 28.29s
200 Backstroke SCY 2:01.19
Front half 57.73s · back half 63.46s
200 Breaststroke SCY 2:30.30 split/total mismatch
100 Butterfly SCY 1:02.33 split/total mismatch
Front half 29.34s · back half 32.99s
100 Individual Medley SCY 1:05.84
Front half 31.49s · back half 34.35s
200 Individual Medley SCY 2:06.01
Front half 58.01s · back half 68.00s
400 Individual Medley SCY 4:50.04 split/total mismatch
100 Freestyle LCM 1:08.45
Front half 31.90s · back half 36.55s
200 Freestyle LCM 2:38.79
Front half 76.13s · back half 82.66s
100 Backstroke LCM 1:13.00 RT 0.74s
Front half 36.17s · back half 36.83s
200 Backstroke LCM 2:45.15 RT 0.72s
Front half 80.24s · back half 84.91s
100 Breaststroke LCM 1:35.37
Front half 45.31s · back half 50.06s
100 Butterfly LCM 1:21.78
Front half 39.46s · back half 42.32s
200 Individual Medley LCM 2:47.65
Front half 80.20s · back half 87.45s
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.