swimstats

Zi Zi Song

MIEPNBCMI

43 plausible swims · 11 meets · 2021-06-04 → 2026-02-21

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 21.81 Sectionals ✓+2.12s to US Open 2026-02-20 2026 WIAA 3A Boys HS State Champs- OBvenue
100 Freestyle SCY 49.42 Sectionals ✓+6.33s to US Open 2025-02-15 2024-2025 Sea-King District II 3A Boys Champsvenue
100 Breaststroke SCY 1:02.17 Sectionals ✓+8.88s to US Open 2025-02-07 2025 KingCo Conference Boys H.S. Champsvenue
50 Freestyle LCM 33.93 +6.94s to Sectionals 2021-06-06 2021 IE VS Apple Capitalslow pool
100 Freestyle LCM 1:02.96 +3.97s to Sectionals 2023-06-03 2023 IE VS Apple Capitalslow pool
200 Freestyle LCM 2:20.60 +11.91s to Sectionals 2023-06-04 2023 IE VS Apple Capitalslow pool
400 Freestyle LCM 5:14.80 +40.41s to Sectionals 2023-06-02 2023 IE VS Apple Capitalslow pool
50 Backstroke LCM 39.99 +13.90s to US Open 2021-06-06 2021 IE VS Apple Capitalslow pool
100 Backstroke LCM 1:15.67 +10.48s to Sectionals 2023-06-03 2023 IE VS Apple Capitalslow pool
50 Breaststroke LCM 37.33 +8.14s to US Open 2023-06-02 2023 IE VS Apple Capitalslow pool
100 Breaststroke LCM 1:18.45 +4.75s to Sectionals 2023-06-04 2023 IE VS Apple Capitalslow pool
50 Butterfly LCM 30.84 +5.95s to US Open 2023-06-03 2023 IE VS Apple Capitalslow pool
100 Butterfly LCM 1:15.09 +12.00s to Sectionals 2023-06-02 2023 IE VS Apple Capitalslow pool
200 Individual Medley LCM 2:35.41 +10.72s to Sectionals 2023-06-03 2023 IE VS Apple Capitalslow pool
400 Individual Medley LCM 5:58.40 +50.61s to Sectionals 2022-06-03 2022 IE VS Apple Capitalslow pool

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 22.14 flat 200 Free Relay 2025-02-22 2025 3A Boys State Swim/Dive Champs
50 Freestyle SCY 21.19 flying 200 Free Relay (leg 4) 2026-02-21 2026 WIAA 3A Boys HS State Champs- OB
50 Freestyle SCY 21.24 flying 200 Medley Relay (leg 4) 2026-02-21 2026 WIAA 3A Boys HS State Champs- OB
100 Freestyle SCY 50.27 flat 400 Free Relay 2026-02-07 2026 (WIAA)KingCo(Sea-King Dist II) 3A BoysOB
100 Freestyle SCY 48.04 flying 400 Free Relay (leg 2) 2026-02-21 2026 WIAA 3A Boys HS State Champs- OB
50 Butterfly SCY 23.20 flying 200 Medley Relay (leg 3) 2026-01-10 2026 Kentridge High School Invitational- Obse

Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.

PR splits

100 Freestyle SCY 49.42

23.98
25.44

Front half 23.98s · back half 25.44s

100 Breaststroke SCY 1:02.17

29.51
32.66

Front half 29.51s · back half 32.66s

100 Freestyle LCM 1:02.96

30.44
32.52

Front half 30.44s · back half 32.52s

200 Freestyle LCM 2:20.60

32.62
35.34
36.91
35.73

Front half 67.96s · back half 72.64s

400 Freestyle LCM 5:14.80

34.50
38.35
39.63
40.08
40.45
40.92
41.13
39.74

Front half 152.56s · back half 162.24s

100 Backstroke LCM 1:15.67

37.01
38.66

Front half 37.01s · back half 38.66s

100 Breaststroke LCM 1:18.45

37.40
41.05

Front half 37.40s · back half 41.05s

100 Butterfly LCM 1:15.09

35.44
39.65

Front half 35.44s · back half 39.65s

200 Individual Medley LCM 2:35.41

34.35
41.15
44.98
34.93

Front half 75.50s · back half 79.91s

400 Individual Medley LCM 5:58.40

36.31
45.02
44.64
44.47
53.84
52.06
41.24
40.82

Front half 170.44s · back half 187.96s

Reaction time

fastest 0.46s average 0.546s slowest 0.62s 7 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 21.81 13 swims
100 Freestyle SCY 49.42 4 swims
100 Breaststroke SCY 1:02.17 2 swims
50 Freestyle LCM 33.93 1 swim
100 Freestyle LCM 1:02.96 3 swims
200 Freestyle LCM 2:20.60 1 swim
400 Freestyle LCM 5:14.80 2 swims
50 Backstroke LCM 39.99 1 swim
100 Backstroke LCM 1:15.67 3 swims
50 Breaststroke LCM 37.33 2 swims
100 Breaststroke LCM 1:18.45 2 swims
50 Butterfly LCM 30.84 3 swims
100 Butterfly LCM 1:15.09 3 swims
200 Individual Medley LCM 2:35.41 2 swims
400 Individual Medley LCM 5:58.40 1 swim