swimJonathan Lo
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.47 | A+0.38s to AA·+0.28s to Sectionals | 2025-01-19 | Fresno Dolphins Swim Team Senior Prelim-Finalvenue |
| 100 Freestyle | SCY | 50.54 | A+0.15s to AA·Sectionals ✓+4.15s to Futures | 2025-10-12 | SMSC 47th Fall Invitevenue |
| 200 Freestyle | SCY | 1:50.15 | AA+3.76s to AAA·Sectionals ✓+8.56s to Futures | 2026-05-08 | 2026 CIF CENTRAL SECTION D1 CHAMPIONSHIPS -venue |
| 500 Freestyle | SCY | 5:06.40 | A+4.71s to AA·+3.71s to Sectionals | 2025-11-22 | 2025 CANY Cranberryvenue |
| 100 Backstroke | SCY | 59.11 | BB+1.82s to A·+3.62s to Sectionals | 2025-05-09 | 2025 CIF CENTRAL SECTION D1 CHAMPIONSHIPSvenue |
| 100 Breaststroke | SCY | 1:08.75 | BB+4.06s to A·+5.56s to Sectionals | 2025-11-22 | 2025 CANY Cranberryvenue |
| 100 Butterfly | SCY | 53.49 | AA+1.50s to AAA·Sectionals ✓+2.90s to Futures | 2026-05-08 | 2026 TYR GO Challengevenue |
| 200 Individual Medley | SCY | 2:08.28 | BB+0.09s to A·+4.29s to Sectionals | 2025-10-11 | SMSC 47th Fall Invitevenue |
| 50 Freestyle | LCM | 26.25 | AA+0.76s to AAA·Sectionals ✓+1.66s to Futures | 2025-07-20 | Renee and Jim Patterson Meet 2025venue |
| 100 Freestyle | LCM | 57.10 | AA+1.51s to AAA·Sectionals ✓+3.51s to Futures | 2026-07-16 | 2026 CA/NV Summer Speedo Sectionals @ BREA -venue |
| 200 Freestyle | LCM | 2:07.13 | AA+4.94s to AAA·Sectionals ✓+9.34s to Futures | 2026-06-21 | 2026 SLOS Firecracker Invitationalvenue |
| 50 Backstroke | LCM | 31.50 | A+0.81s to AA·+3.61s to Futures | 2026-06-19 | 2026 SLOS Firecracker Invitationalvenue |
| 100 Backstroke | LCM | 1:10.35 | BB+2.86s to A·+5.16s to Sectionals | 2025-07-17 | Renee and Jim Patterson Meet 2025venue |
| 50 Butterfly | LCM | 27.88 | AA+0.19s to AAA·+1.59s to Futures | 2026-07-19 | 2026 CA/NV Summer Speedo Sectionals @ BREA -venue |
| 100 Butterfly | LCM | 1:02.38 | AA+2.69s to AAA·Sectionals ✓+4.39s to Futures | 2026-07-18 | 2026 CA/NV Summer Speedo Sectionals @ BREA -venue |
| 200 Butterfly | LCM | 2:28.85 | BB+3.46s to A·+7.76s to Sectionals | 2026-07-18 | 2026 CA/NV Summer Speedo Sectionals @ BREA -venue |
Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.
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 | 21.89 | flying | 200 Free Relay (leg 3) | 2026-05-09 | 2026 TYR GO Challenge |
| 50 Butterfly | SCY | 23.45 | flying | 200 Medley Relay (leg 3) | 2026-05-09 | 2026 TYR GO Challenge |
| 50 Freestyle | LCM | 25.81 | flying | 200 Free Relay (leg 3) | 2025-07-19 | Renee and Jim Patterson Meet 2025 |
| 100 Butterfly | LCM | 2:58.11 | flying | 400 Medley Relay (leg 3) | 2025-07-18 | Renee and Jim Patterson Meet 2025 |
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 17-18 · SCY
1342 points (2/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 5:06.40 | 702 |
| 200 IM SCY | 2:08.28 | 640 |
| 200 BK SCY | — | 0 |
| 200 BR SCY | — | 0 |
| 200 FL SCY | — | 0 |
| 400 IM SCY | — | 0 |
IMR 17-18 · SCY
3269 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 1:50.15 | 752 |
| 100 BK SCY | 59.11 | 565 |
| 100 BR SCY | 1:08.75 | 540 |
| 100 FL SCY | 53.49 | 772 |
| 200 IM SCY | 2:08.28 | 640 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 50.54
Front half 24.82s · back half 25.72s
200 Freestyle SCY 1:50.15
Front half 52.57s · back half 57.58s
500 Freestyle SCY 5:06.40
Front half 149.96s · back half 156.44s
100 Backstroke SCY 59.11
Front half 28.60s · back half 30.51s
100 Breaststroke SCY 1:08.75
Front half 32.11s · back half 36.64s
100 Butterfly SCY 53.49
Front half 24.47s · back half 29.02s
200 Individual Medley SCY 2:08.28
Front half 58.44s · back half 69.84s
50 Freestyle LCM 26.25
100 Freestyle LCM 57.10 RT 0.58s
Front half 27.70s · back half 29.40s
200 Freestyle LCM 2:07.13
Front half 62.11s · back half 65.02s
100 Backstroke LCM 1:10.35
100 Butterfly LCM 1:02.38 RT 0.66s
Front half 28.99s · back half 33.39s
200 Butterfly LCM 2:28.85
Front half 66.36s · back half 82.49s
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.