swimstats

Tommy Chern

Mage 17IEMTPNRAINRBSMAC

324 plausible swims · 58 meets · 2021-06-04 → 2026-08-01

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 24.55 BB+0.46s to A·+1.36s to Sectionals 2025-03-02 2025 PN CSC Mystery Meetvenue
100 Freestyle SCY 52.25 A+1.86s to AA·+1.26s to Sectionals 2026-01-18 2026 PN VAST 49th Annual Washington Open- APPvenue
200 Freestyle SCY 1:52.67 A+1.48s to AA·+0.88s to Sectionals 2024-03-24 2024 Northwest Region Age Group Regionalsvenue
500 Freestyle SCY 4:55.53 AA+6.94s to AAA·Sectionals ✓+18.44s to Futures 2026-03-14 2026 Bellevue Club Premier Invite- Approvedfast pool
1000 Freestyle SCY 10:14.25 AA+9.76s to AAA·Sectionals ✓+39.96s to Futures 2026-03-12 2026 Bellevue Club Premier Invite- Approvedfast pool
1650 Freestyle SCY 17:23.01 AA+33.22s to AAA·Sectionals ✓+77.52s to Futures 2025-11-16 2025 PN IST November Invitationalvenue
100 Backstroke SCY 57.74 BB+0.45s to A·+2.25s to Sectionals 2026-03-13 2026 Bellevue Club Premier Invite- Approvedfast pool
200 Backstroke SCY 1:44.89 AAAA·Jr Nationals ✓+0.10s to Nationals 2025-03-20 2025 Northwest Region Age Group Regionals
100 Breaststroke SCY 1:05.67 BB+0.98s to A·+2.48s to Sectionals 2026-03-14 2026 Bellevue Club Premier Invite- Approvedfast pool
200 Breaststroke SCY 2:23.90 BB+3.11s to A·+6.61s to Sectionals 2025-11-23 2025 PN Nov. AGI, Division 2 (SMAC)venue
50 Butterfly SCY 2:27.86 +116.67s to B·+124.97s to Futures 2025-10-22 1657244
100 Butterfly SCY 55.36 A+1.07s to AA·+0.17s to Sectionals 2026-02-08 2026 (WIAA) Metro(SeaKing District Il) BoysOBvenue
200 Butterfly SCY 1:59.55 AA+2.66s to AAA·Sectionals ✓+5.86s to Futures 2026-03-12 2026 Bellevue Club Premier Invite- Approvedfast pool
200 Individual Medley SCY 2:02.39 AA+4.90s to AAA·Sectionals ✓+8.50s to Futures 2026-02-13 2026 (WIAA) Sea-King Dist II 3A Boys H.S. -OBvenue
400 Individual Medley SCY 4:08.82 AAA+7.33s to AAAA·Sectionals ✓+1.83s to Futures 2025-10-22 1657244
50 Freestyle LCM 27.47 A+0.78s to AA·+0.48s to Sectionals 2026-06-06 2026 PN VAST Summer Sprint & Dist. - Approvedvenue
100 Freestyle LCM 58.70 A+0.61s to AA·Sectionals ✓+5.11s to Futures 2026-07-18 2026 PN 13 & Over LC Championships- Approvedfast pool
200 Freestyle LCM 2:07.01 AA+4.82s to AAA·Sectionals ✓+9.22s to Futures 2026-01-01 Finals - WZ LCM Senior Champs 2026 - copied - 2026-07-28 to 2026-08-01
400 Freestyle LCM 4:29.35 AA+8.76s to AAA·Sectionals ✓+19.36s to Futures 2026-07-18 2026 PN 13 & Over LC Championships- Approvedfast pool
800 Freestyle LCM 9:16.98 AA+15.49s to AAA·Sectionals ✓+36.29s to Futures 2025-07-20 2025 PN 13&O LC Senior Championshipsvenue
1500 Freestyle LCM 17:48.57 AA+29.48s to AAA·Sectionals ✓+69.58s to Futures 2025-07-17 2025 PN 13&O LC Senior Championshipsvenue
50 Backstroke LCM 36.70 B+2.01s to BB·+8.81s to Futures 2022-06-05 2022 IE VS Apple Capitalslow pool
100 Backstroke LCM 1:07.86 BB+0.37s to A·+2.67s to Sectionals 2025-06-28 2025 PN SMAC Summer Classic Invitationalvenue
200 Backstroke LCM 2:25.12 A+4.13s to AA·+3.63s to Sectionals 2026-07-16 2026 PN 13 & Over LC Championships- Approvedfast pool
50 Breaststroke LCM 45.88 +4.99s to B·+14.99s to Futures 2022-06-03 2022 IE VS Apple Capitalslow pool
100 Breaststroke LCM 1:18.64 BB+3.15s to A·+4.94s to Sectionals 2025-06-14 2025 IST June Invtationalvenue
200 Breaststroke LCM 2:48.31 BB+3.62s to A·+7.43s to Sectionals 2025-06-26 2025 PN CSC 104th Annual Senior Seattle Openvenue
50 Butterfly LCM 29.07 A+0.18s to AA·+2.78s to Futures 2026-01-01 Finals - WZ LCM Senior Champs 2026 - copied - 2026-07-28 to 2026-08-01
100 Butterfly LCM 1:02.72 A+0.33s to AA·Sectionals ✓+4.73s to Futures 2025-07-31 WZ LCM Senior Champs 2025fast pool
200 Butterfly LCM 2:19.54 A+0.25s to AA·Sectionals ✓+9.35s to Futures 2026-01-01 Finals - WZ LCM Senior Champs 2026 - copied - 2026-07-28 to 2026-08-01
200 Individual Medley LCM 2:21.74 AA+5.55s to AAA·Sectionals ✓+8.95s to Futures 2026-01-01 Finals - WZ LCM Senior Champs 2026 - copied - 2026-07-28 to 2026-08-01
400 Individual Medley LCM 5:01.69 AA+9.30s to AAA·Sectionals ✓+19.30s to Futures 2025-07-18 2025 PN 13&O LC Senior Championshipsvenue

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.

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

LegCourseTime StartRelayDateMeet
50 Freestyle SCY 23.52 flying 200 Free Relay (leg 2) 2025-03-22 2025 Northwest Region Age Group Regionals
100 Freestyle SCY 52.47 flying 400 Free Relay (leg 4) 2025-03-20 2025 Northwest Region Age Group Regionals
50 Butterfly SCY 25.81 flying 200 Medley Relay (leg 3) 2025-03-21 2025 Northwest Region Age Group Regionals
100 Butterfly SCY 56.11 flying 400 Medley Relay (leg 3) 2025-03-22 2025 Northwest Region Age Group Regionals
50 Freestyle LCM 27.30 flying 200 Free Relay (leg 3) WZ LCM Senior Champs 2025
100 Freestyle LCM 58.59 flying 400 Free Relay (leg 2) 2026-07-31 Finals - WZ LCM Senior Champs 2026 - copied
200 Freestyle LCM 2:11.25 flying 800 Free Relay (leg 3) 2026-07-29 Finals - WZ LCM Senior Champs 2026 - copied
50 Butterfly LCM 30.08 flying 200 Medley Relay (leg 3) WZ LCM Senior Champs 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

4861 points (6/6 events)

EventTime Points
500 FR SCY 4:55.53 783
200 BK SCY 1:44.89 1088
200 BR SCY 2:23.90 604
200 FL SCY 1:59.55 774
200 IM SCY 2:02.39 737
400 IM SCY 4:08.82 875

IMR 17-18 · LCM

3397 points (5/5 events)

EventTime Points
200 FR LCM 2:07.01 736
100 BK LCM 1:07.86 630
100 BR LCM 1:18.64 567
100 FL LCM 1:02.72 711
200 IM LCM 2:21.74 753

Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.

PR splits

100 Freestyle SCY 52.25 RT 0.76s

25.20
27.05

Front half 25.20s · back half 27.05s

200 Freestyle SCY 1:52.67

26.26
28.36
28.83
29.22

Front half 54.62s · back half 58.05s

500 Freestyle SCY 4:55.53 RT 0.82s

26.66
28.70
28.89
29.72
29.94
30.53
30.48
30.40
30.59
29.62

Front half 143.91s · back half 151.62s

1000 Freestyle SCY 10:14.25 RT 0.82s

27.60
30.07
30.75
30.60
30.94
31.22
31.05
31.36
31.34
31.19
30.69
30.68
30.88
30.95
30.53
30.79
31.43
31.08
31.19
29.91

Front half 306.12s · back half 308.13s

1650 Freestyle SCY 17:23.01

28.75
31.05
31.33
31.49
31.45
31.74
31.80
31.89
31.61
31.50
31.65
31.46
31.72
31.36
31.71
32.07
31.86
31.84
31.72
31.37
31.98
31.97
31.86
32.01
31.85
32.33
31.82
32.11
31.90
32.01
32.09
31.44
30.27

100 Backstroke SCY 57.74 RT 0.72s

28.16
29.58

Front half 28.16s · back half 29.58s

200 Backstroke SCY 1:44.89 split/total mismatch

29.84
31.96
32.06
32.59

Front half 61.80s · back half 43.09s

100 Breaststroke SCY 1:05.67 RT 0.77s

31.14
34.53

Front half 31.14s · back half 34.53s

200 Breaststroke SCY 2:23.90

33.60
36.98
36.99
36.33

Front half 70.58s · back half 73.32s

100 Butterfly SCY 55.36

26.31
29.05

Front half 26.31s · back half 29.05s

200 Butterfly SCY 1:59.55 RT 0.86s

26.98
30.13
31.04
31.40

Front half 57.11s · back half 62.44s

200 Individual Medley SCY 2:02.39

26.71
30.93
36.07
28.68

Front half 57.64s · back half 64.75s

400 Individual Medley SCY 4:08.82 split/total mismatch

26.57
32.37
40.53
29.80

Front half 58.94s · back half 189.88s

200 Freestyle LCM 2:07.01

29.88
32.22
32.14
32.77

Front half 62.10s · back half 64.91s

400 Freestyle LCM 4:29.35 RT 0.81s

63.41
68.59
69.10
68.25

Front half 132.00s · back half 137.35s

800 Freestyle LCM 9:16.98 RT 0.90s

66.08
71.03
70.38
70.68
70.74
70.77
70.07
67.23

Front half 278.17s · back half 278.81s

1500 Freestyle LCM 17:48.57 RT 0.84s

66.82
72.05
72.73
72.42
71.63
72.50
72.20
71.37
72.02
71.85
71.24
71.63
71.04
71.60
67.47

200 Backstroke LCM 2:25.12 RT 0.71s

70.69
74.43

Front half 70.69s · back half 74.43s

200 Breaststroke LCM 2:48.31

83.08
85.23

Front half 83.08s · back half 85.23s

200 Butterfly LCM 2:19.54

30.36
34.38
36.24
38.56

Front half 64.74s · back half 74.80s

200 Individual Medley LCM 2:21.74

29.76
35.62
42.58
33.78

Front half 65.38s · back half 76.36s

400 Individual Medley LCM 5:01.69 RT 0.83s

65.77
77.46
89.96
68.50

Front half 143.23s · back half 158.46s

Reaction time

fastest 0.64s average 0.782s slowest 0.90s 113 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.

Swim history

Every recorded swim, newest first
DateEventCourse TimeAge RoundMeet

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.

50 Freestyle SCY 24.55 5 swims
100 Freestyle SCY 52.25 9 swims
200 Freestyle SCY 1:52.67 10 swims
500 Freestyle SCY 4:55.53 24 swims
1000 Freestyle SCY 10:14.25 9 swims
1650 Freestyle SCY 17:23.01 7 swims
100 Backstroke SCY 57.74 10 swims
200 Backstroke SCY 1:44.89 13 swims
100 Breaststroke SCY 1:05.67 8 swims
200 Breaststroke SCY 2:23.90 9 swims
50 Butterfly SCY 2:27.86 1 swim
100 Butterfly SCY 55.36 10 swims
200 Butterfly SCY 1:59.55 16 swims
200 Individual Medley SCY 2:02.39 18 swims
400 Individual Medley SCY 4:08.82 9 swims
50 Freestyle LCM 27.47 8 swims
100 Freestyle LCM 58.70 12 swims
200 Freestyle LCM 2:07.01 15 swims
400 Freestyle LCM 4:29.35 10 swims
800 Freestyle LCM 9:16.98 9 swims
1500 Freestyle LCM 17:48.57 10 swims
50 Backstroke LCM 36.70 2 swims
100 Backstroke LCM 1:07.86 10 swims
200 Backstroke LCM 2:25.12 9 swims
50 Breaststroke LCM 45.88 2 swims
100 Breaststroke LCM 1:18.64 5 swims
200 Breaststroke LCM 2:48.31 9 swims
50 Butterfly LCM 29.07 6 swims
100 Butterfly LCM 1:02.72 14 swims
200 Butterfly LCM 2:19.54 18 swims
200 Individual Medley LCM 2:21.74 15 swims
400 Individual Medley LCM 5:01.69 11 swims