Brandon Ko

Mage 12ILWIGSCNTA

34 plausible swims · 7 meets · 2024-01-21 → 2026-03-15

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	28.18	BB+0.09s to A	2025-03-15	2025 ISI Winter 11-14 Age Group Championships venue
100 Freestyle	SCY	56.85	AA+0.66s to AAA	2026-03-15	2026 ISI Winter 11-14 Age Group Championships venue
200 Freestyle	SCY	2:06.17	AA+3.58s to AAA	2026-03-13	2026 ISI Winter 11-14 Age Group Championships venue
50 Backstroke	SCY	30.78	AA+1.09s to AAA	2026-02-28	2026 Winter ISI Regionals- BSC fast pool
100 Backstroke	SCY	1:07.82	A+1.83s to AA	2026-03-14	2026 ISI Winter 11-14 Age Group Championships venue
50 Breaststroke	SCY	32.94	AAA+1.45s to AAAA	2026-03-14	2026 ISI Winter 11-14 Age Group Championships venue
100 Breaststroke	SCY	1:15.41	A+0.52s to AA	2026-03-13	2026 ISI Winter 11-14 Age Group Championships venue
50 Butterfly	SCY	28.60	AA+0.41s to AAA	2026-03-15	2026 ISI Winter 11-14 Age Group Championships venue
100 Butterfly	SCY	1:35.13	+12.24s to B	2024-01-21	2024 MMSC Winter Invite slow pool
100 Individual Medley	SCY	1:03.57	AAA+2.48s to AAAA	2026-03-13	2026 ISI Winter 11-14 Age Group Championships venue
200 Individual Medley	SCY	2:25.46	AA+6.67s to AAA	2026-02-28	2026 Winter ISI Regionals- BSC fast pool
50 Freestyle	LCM	30.57	AA+1.18s to AAA	2025-07-27	Illinois Swimming Age Group Champs LC 25 venue
100 Freestyle	LCM	1:07.93	A+0.44s to AA	2025-07-24	Illinois Swimming Age Group Champs LC 25 venue
200 Freestyle	LCM	2:46.57	B+0.18s to BB	2024-07-19	2024 IL Swimming LC Age Group Championships venue
50 Backstroke	LCM	38.59	BB+0.80s to A	2025-07-24	Illinois Swimming Age Group Champs LC 25 venue
50 Breaststroke	LCM	41.16	A+1.17s to AA	2025-07-25	Illinois Swimming Age Group Champs LC 25 venue
100 Breaststroke	LCM	1:35.42	BB+4.13s to A	2025-07-24	Illinois Swimming Age Group Champs LC 25 venue
100 Butterfly	LCM	1:36.30	+1.21s to B	2024-07-20	2024 IL Swimming LC Age Group Championships venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.

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

Leg	Course	Time	Start	Relay	Date	Meet
50 Freestyle	SCY	33.23	flat	200 Free Relay	2024-03-10	2024 IL Swimming SC Age Group Championships
50 Freestyle	SCY	31.65	flying	200 Free Relay (leg 4)	2024-07-14	2024 IL BSC Summer Regional Championships
50 Breaststroke	SCY	42.07	flying	200 Medley Relay (leg 2)	2024-03-09	2024 IL Swimming SC Age Group Championships
50 Butterfly	SCY	38.81	flying	200 Medley Relay (leg 3)	2024-07-13	2024 IL BSC Summer Regional Championships
50 Freestyle	LCM	34.22	flying	200 Medley Relay (leg 4)	2024-07-19	2024 IL Swimming LC Age Group Championships
50 Freestyle	LCM	34.72	flying	200 Free Relay (leg 4)	2024-07-18	2024 IL Swimming LC Age Group Championships

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 11-12 · SCY

2387 points (4/5 events — incomplete)

Event	Time	Points
100 BK SCY	1:07.82	674
100 BR SCY	1:15.41	726
100 FL SCY	1:35.13	239
200 IM SCY	2:25.46	748
500 FR SCY	—	0

IMR 11-12 · SCY

4137 points (5/5 events)

Event	Time	Points
200 FR SCY	2:06.17	797
50 BK SCY	30.78	768
50 BR SCY	32.94	873
50 FL SCY	28.60	812
100 IM SCY	1:03.57	887

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

PR splits

100 Freestyle SCY 56.85

27.70

29.15

Front half 27.70s · back half 29.15s

200 Freestyle SCY 2:06.17

28.16

31.85

33.25

32.91

Front half 60.01s · back half 66.16s

100 Backstroke SCY 1:07.82

33.32

34.50

Front half 33.32s · back half 34.50s

100 Breaststroke SCY 1:15.41

36.36

39.05

Front half 36.36s · back half 39.05s

100 Butterfly SCY 1:35.13

43.72

51.41

Front half 43.72s · back half 51.41s

100 Individual Medley SCY 1:03.57

30.24

33.33

Front half 30.24s · back half 33.33s

200 Individual Medley SCY 2:25.46

30.75

37.85

43.81

33.05

Front half 68.60s · back half 76.86s

100 Freestyle LCM 1:07.93

33.61

34.32

Front half 33.61s · back half 34.32s

200 Freestyle LCM 2:46.57

37.58

43.28

44.17

41.54

Front half 80.86s · back half 85.71s

100 Breaststroke LCM 1:35.42 RT 0.65s

44.85

50.57

Front half 44.85s · back half 50.57s

100 Butterfly LCM 1:36.30

44.09

52.21

Front half 44.09s · back half 52.21s

Reaction time

fastest 0.65s average 0.665s slowest 0.68s 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.

50 Freestyle SCY 28.18 1 swim

100 Freestyle SCY 56.85 3 swims

200 Freestyle SCY 2:06.17 1 swim

50 Backstroke SCY 30.78 2 swims

100 Backstroke SCY 1:07.82 2 swims

50 Breaststroke SCY 32.94 4 swims

100 Breaststroke SCY 1:15.41 2 swims

50 Butterfly SCY 28.60 3 swims

100 Butterfly SCY 1:35.13 1 swim

100 Individual Medley SCY 1:03.57 3 swims

200 Individual Medley SCY 2:25.46 2 swims

50 Freestyle LCM 30.57 2 swims

100 Freestyle LCM 1:07.93 2 swims

200 Freestyle LCM 2:46.57 1 swim

50 Backstroke LCM 38.59 1 swim

50 Breaststroke LCM 41.16 2 swims

100 Breaststroke LCM 1:35.42 1 swim

100 Butterfly LCM 1:36.30 1 swim