Jin Yamamoto

Mage 51PNPSM

6 plausible swims · 1 meets · 2025-08-07 → 2025-08-10

Personal records

Event	Course	Best	Date	Meet
100 Freestyle	LCM	1:10.25	2025-08-07	2025 USMS Summer Nationals- OBSERVED venue
200 Freestyle	LCM	2:36.83	2025-08-09	2025 USMS Summer Nationals- OBSERVED venue
200 Backstroke	LCM	2:53.93	2025-08-10	2025 USMS Summer Nationals- OBSERVED venue
50 Butterfly	LCM	32.14	2025-08-10	2025 USMS Summer Nationals- OBSERVED venue
200 Individual Medley	LCM	2:51.71	2025-08-09	2025 USMS Summer Nationals- OBSERVED venue
400 Individual Medley	LCM	6:13.91	2025-08-07	2025 USMS Summer Nationals- OBSERVED venue

PR splits

100 Freestyle LCM 1:10.25 RT 0.76s

34.50

35.75

Front half 34.50s · back half 35.75s

200 Freestyle LCM 2:36.83 RT 0.76s

36.80

40.48

40.26

39.29

Front half 77.28s · back half 79.55s

200 Backstroke LCM 2:53.93 RT 0.80s

41.50

43.54

44.76

44.13

Front half 85.04s · back half 88.89s

200 Individual Medley LCM 2:51.71 RT 0.76s

33.83

43.95

52.70

41.23

Front half 77.78s · back half 93.93s

400 Individual Medley LCM 6:13.91 RT 0.82s

36.80

45.20

47.39

101.47

55.08

44.35

43.62

Reaction time

fastest 0.70s average 0.767s slowest 0.82s 6 electronic starts

Start reaction over time faster starts higher

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.

Progression

Faster times are higher. One card per event, all courses & history.

100 Freestyle LCM 1:10.25 1 swim

200 Freestyle LCM 2:36.83 1 swim

200 Backstroke LCM 2:53.93 1 swim

50 Butterfly LCM 32.14 1 swim

200 Individual Medley LCM 2:51.71 1 swim

400 Individual Medley LCM 6:13.91 1 swim