swimstats

Jackyu Yu

Mage 10CABREA

67 plausible swims · 12 meets · 2024-09-28 → 2026-07-26

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 32.61 BB+1.42s to A·+9.42s to Sectionals 2025-12-12 2025 CA SCS/RAA WAGvenue
100 Freestyle SCY 1:10.40 BB+0.21s to A·+19.41s to Sectionals 2025-12-14 2025 CA SCS/RAA WAGvenue
50 Backstroke SCY 36.93 A+0.94s to AA·+13.24s to Futures 2025-11-09 Orange Committee's November ABC Meet SOCALvenue
100 Backstroke SCY 1:17.71 A+1.42s to AA·+22.22s to Sectionals 2025-12-06 2025 CA STOP December ABC Meetvenue
50 Breaststroke SCY 46.86 BB+4.77s to A·+20.57s to Futures 2025-12-06 2025 CA STOP December ABC Meetvenue
100 Breaststroke SCY 1:44.62 B+1.03s to BB·+41.43s to Sectionals 2025-11-09 Orange Committee's November ABC Meet SOCALvenue
50 Butterfly SCY 41.61 B+0.32s to BB·+18.72s to Futures 2025-11-09 Orange Committee's November ABC Meet SOCALvenue
100 Butterfly SCY 1:31.46 BB+6.87s to A·+36.27s to Sectionals 2025-11-08 Orange Committee's November ABC Meet SOCALvenue
100 Individual Medley SCY 1:23.07 BB+3.18s to A 2025-12-13 2025 CA SCS/RAA WAGvenue
50 Freestyle LCM 35.11 A+0.72s to AA·+8.12s to Sectionals 2026-07-26 2026 CA SCS Summer A/G Champs @ BREAfast pool
100 Freestyle LCM 1:18.61 A+1.82s to AA·+19.62s to Sectionals 2026-06-12 ARMADA-2026 SCS June AG Invitevenue
200 Freestyle LCM 2:52.89 A+6.50s to AA·+44.20s to Sectionals 2026-07-11 2026 CA TST July 2026 BB MIN LCvenue
50 Backstroke LCM 40.88 AA+1.89s to AAA·+12.99s to Futures 2026-07-26 2026 CA SCS Summer A/G Champs @ BREAfast pool
100 Backstroke LCM 1:27.63 AA+3.54s to AAA·+22.44s to Sectionals 2026-06-14 ARMADA-2026 SCS June AG Invitevenue
50 Breaststroke LCM 52.02 BB+4.13s to A·+21.13s to Futures 2026-06-14 ARMADA-2026 SCS June AG Invitevenue
50 Butterfly LCM 46.26 BB+5.67s to A·+19.97s to Futures 2026-07-12 2026 CA TST July 2026 BB MIN LCvenue
100 Butterfly LCM 1:46.28 BB+9.99s to A·+43.19s to Sectionals 2026-07-11 2026 CA TST July 2026 BB MIN LCvenue
200 Individual Medley LCM 3:20.99 BB+2.70s to A·+56.30s to Sectionals 2026-07-12 2026 CA TST July 2026 BB MIN LCvenue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 10.

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 35.79 flat 200 Free Relay 2025-07-19 2025 CA GOLD OC Summer Championhip SCY
50 Freestyle SCY 36.00 flying 200 Medley Relay (leg 4) 2025-07-20 2025 CA GOLD OC Summer Championhip SCY
50 Backstroke SCY 35.81 flat 200 Medley Relay 2025-12-14 2025 CA SCS/RAA WAG
50 Freestyle LCM 35.84 flying 200 Free Relay (leg 2) 2026-07-24 2026 CA SCS Summer A/G Champs @ BREA
50 Backstroke LCM 42.14 flat 200 Medley Relay 2025-07-24 2025 CA SCS Summer A/G Champs

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 10 & under · LCM

2482 points (4/5 events — incomplete)

EventTime Points
200 FR LCM 2:52.89 675
100 BK LCM 1:27.63 760
100 FL LCM 1:46.28 419
200 IM LCM 3:20.99 628
100 BR LCM— 0

IMR 10 & under · LCM

2995 points (5/5 events)

EventTime Points
100 FR LCM 1:18.61 699
50 BK LCM 40.88 740
50 BR LCM 52.02 507
50 FL LCM 46.26 421
200 IM LCM 3:20.99 628

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

PR splits

100 Freestyle SCY 1:10.40

34.06
36.34

Front half 34.06s · back half 36.34s

100 Backstroke SCY 1:17.71

38.09
39.62

Front half 38.09s · back half 39.62s

100 Breaststroke SCY 1:44.62

49.80
54.82

Front half 49.80s · back half 54.82s

100 Butterfly SCY 1:31.46

40.64
50.82

Front half 40.64s · back half 50.82s

100 Individual Medley SCY 1:23.07

38.01
45.06

Front half 38.01s · back half 45.06s

200 Freestyle LCM 2:52.89

39.69
44.91
45.25
43.04

Front half 84.60s · back half 88.29s

100 Butterfly LCM 1:46.28

49.51
56.77

Front half 49.51s · back half 56.77s

200 Individual Medley LCM 3:20.99

48.07
47.30
63.43
42.19

Front half 95.37s · back half 105.62s

Reaction time

fastest 0.62s average 0.701s slowest 0.90s 9 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 32.61 7 swims
100 Freestyle SCY 1:10.40 7 swims
50 Backstroke SCY 36.93 6 swims
100 Backstroke SCY 1:17.71 5 swims
50 Breaststroke SCY 46.86 3 swims
100 Breaststroke SCY 1:44.62 2 swims
50 Butterfly SCY 41.61 2 swims
100 Butterfly SCY 1:31.46 5 swims
100 Individual Medley SCY 1:23.07 4 swims
50 Freestyle LCM 35.11 3 swims
100 Freestyle LCM 1:18.61 3 swims
200 Freestyle LCM 2:52.89 1 swim
50 Backstroke LCM 40.88 5 swims
100 Backstroke LCM 1:27.63 5 swims
50 Breaststroke LCM 52.02 2 swims
50 Butterfly LCM 46.26 1 swim
100 Butterfly LCM 1:46.28 1 swim
200 Individual Medley LCM 3:20.99 1 swim