Brian Bosse

Mage 18FGKYMTNCSESZWVKYRACESW

440 plausible swims · 71 meets · 2018-09-22 → 2026-03-15

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	20.99	AAA+0.30s to AAAA	2025-12-05	2025 Holiday Classic venue
100 Freestyle	SCY	46.58	AAA+1.09s to AAAA	2026-03-15	2026 NC TAC Speedo Champions Series ESSZ venue
200 Freestyle	SCY	1:41.99	AAA+1.40s to AAAA	2026-03-13	2026 NC TAC Speedo Champions Series ESSZ venue
500 Freestyle	SCY	4:51.71	AA+5.02s to AAA	2025-02-28	2025 RACE to Championships venue
1650 Freestyle	SCY	17:00.63	AA+16.84s to AAA	2024-01-01	race to state 2024 results
50 Backstroke	SCY	25.24	AA+0.95s to AAA	2024-09-29	Alexis Swift Invitational venue
100 Backstroke	SCY	51.21	AAA+2.02s to AAAA	2026-03-14	2026 NC TAC Speedo Champions Series ESSZ venue
200 Backstroke	SCY	1:53.72	AA+0.23s to AAA	2025-03-21	2025 13 & OVER Kentucky SCY Championship fast pool
50 Breaststroke	SCY	28.38	AA+0.39s to AAA	2025-01-01	sky fall fest results 2025
100 Breaststroke	SCY	59.27	AA+0.38s to AAA	2026-03-13	2026 NC TAC Speedo Champions Series ESSZ venue
200 Breaststroke	SCY	2:16.63	A+2.84s to AA	2025-01-01	2025 13 & OVER Kentucky State SCY Championship
50 Butterfly	SCY	23.70	AAA+0.51s to AAAA	2025-01-01	sky fall fest results 2025
100 Butterfly	SCY	50.60	AAA+1.41s to AAAA	2026-03-13	2026 NC TAC Speedo Champions Series ESSZ venue
200 Butterfly	SCY	1:56.99	AA+1.10s to AAA	2026-03-14	2026 NC TAC Speedo Champions Series ESSZ venue
100 Individual Medley	SCY	57.65		2023-11-05	2023 SKY Fall Festival venue
200 Individual Medley	SCY	1:54.73	AAA+3.84s to AAAA	2026-03-15	2026 NC TAC Speedo Champions Series ESSZ venue
400 Individual Medley	SCY	4:17.72	AA+6.93s to AAA	2025-01-01	sky fall fest results 2025
50 Freestyle	LCM	24.68	AAA+0.69s to AAAA	2025-07-17	25 KYLSC Long Course Championship
100 Freestyle	LCM	54.83	AAA+2.14s to AAAA	2025-07-17	25 KYLSC Long Course Championship
200 Freestyle	LCM	2:04.80	AA+4.11s to AAA	2024-07-25	2024 Southern Zone Senior LC Championships venue
400 Freestyle	LCM	4:36.13	A+7.14s to AA	2023-07-06	43rd Annual Seahawk Invitational venue
800 Freestyle	LCM	9:35.29	A+12.00s to AA	2024-05-19	Kentucky Aquatics Derby Classic venue
1500 Freestyle	LCM	18:46.82	BB+2.13s to A	2022-07-21	2022 KY 13 & Over LCM State Championship venue
2000 Freestyle	LCM	34:59.38			2024 Southern Zone Open Water Championships venue
4000 Freestyle	LCM	58:29.50		2024-06-27	2024 KY Open Water State Championships venue
5000 Freestyle	LCM	69:27.70		2024-06-01	2024 Southern Zone Open Water Championships venue
50 Backstroke	LCM	28.31	AAA+0.32s to AAAA	2025-07-25	2025 TYR FUTURES MADISON venue
100 Backstroke	LCM	1:00.89	AAA+2.20s to AAAA	2025-07-23	2025 TYR FUTURES MADISON
200 Backstroke	LCM	2:20.64	A+0.85s to AA	2025-05-17	Kentucky Aquatics Derby Classic venue
50 Breaststroke	LCM	33.40	AA+1.21s to AAA	2024-05-05	2024 CKA DERBY DASH slow pool
100 Breaststroke	LCM	1:13.72	A+2.13s to AA	2024-07-26	2024 Southern Zone Senior LC Championships venue
200 Breaststroke	LCM	2:49.06	BB+5.77s to A	2024-05-19	Kentucky Aquatics Derby Classic venue
50 Butterfly	LCM	26.79	AAA+0.70s to AAAA	2025-07-17	25 KYLSC Long Course Championship
100 Butterfly	LCM	58.26	AAA+1.97s to AAAA	2025-07-17	25 KYLSC Long Course Championship
200 Butterfly	LCM	2:28.56	BB+4.67s to A	2022-07-23	2022 KY 13 & Over LCM State Championship venue
200 Individual Medley	LCM	2:16.99	AA+1.30s to AAA	2024-07-27	2024 Southern Zone Senior LC Championships venue
400 Individual Medley	LCM	5:24.87	BB+6.88s to A	2022-07-22	2022 KY 13 & Over LCM State Championship venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 18.

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	21.73	flying	200 Free Relay (leg 4)	2025-03-22	2025 13 & OVER Kentucky SCY Championship
50 Freestyle	SCY	26.75	flying	200 Medley Relay (leg 4)	2024-03-24	2024 13 & OVER Kentucky SCY Championship
100 Freestyle	SCY	47.44	flying	400 Free Relay (leg 4)	2026-03-15	2026 NC TAC Speedo Champions Series ESSZ
200 Freestyle	SCY	1:42.29	flying	800 Free Relay (leg 4)	2026-03-12	2026 NC TAC Speedo Champions Series ESSZ
50 Backstroke	SCY	24.09	flat	200 Medley Relay	2025-03-23	2025 13 & OVER Kentucky SCY Championship
100 Backstroke	SCY	51.25	flat	400 Medley Relay	2025-03-22	2025 13 & OVER Kentucky SCY Championship
100 Butterfly	SCY	51.25	flying	400 Medley Relay (leg 3)	2026-03-13	2026 NC TAC Speedo Champions Series ESSZ
50 Freestyle	LCM	24.76	flying	200 Free Relay (leg 4)	2025-07-18	25 KYLSC Long Course Championship
100 Freestyle	LCM	56.90	flat	400 Free Relay	2024-07-21	2024 Kentucky Swimming LC State Championship
100 Freestyle	LCM	53.97	flying	400 Free Relay (leg 4)	2025-07-20	25 KYLSC Long Course Championship
200 Freestyle	LCM	2:06.46	flying	800 Free Relay (leg 4)	2024-07-25	2024 Southern Zone Senior LC Championships
50 Backstroke	LCM	28.96	flat	200 Medley Relay	2024-07-24	2024 Southern Zone Senior LC Championships
100 Backstroke	LCM	1:02.71	flat	400 Medley Relay	2024-07-27	2024 Southern Zone Senior LC Championships
50 Breaststroke	LCM	36.92	flying	200 Medley Relay (leg 2)	2022-07-24	2022 KY 13 & Over LCM State Championship
100 Breaststroke	LCM	1:22.05	flying	400 Medley Relay (leg 2)	2022-07-23	2022 KY 13 & Over LCM State Championship

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

4881 points (6/6 events)

Event	Time	Points
500 FR SCY	4:51.71	814
200 BK SCY	1:53.72	853
200 BR SCY	2:16.63	706
200 FL SCY	1:56.99	826
200 IM SCY	1:54.73	895
400 IM SCY	4:17.72	787

IMR 17-18 · SCY

4467 points (5/5 events)

Event	Time	Points
200 FR SCY	1:41.99	947
100 BK SCY	51.21	870
100 BR SCY	59.27	842
100 FL SCY	50.60	913
200 IM SCY	1:54.73	895

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

PR splits

100 Freestyle SCY 46.58

22.56

24.02

Front half 22.56s · back half 24.02s

200 Freestyle SCY 1:41.99

23.03

25.86

26.46

26.64

Front half 48.89s · back half 53.10s

500 Freestyle SCY 4:51.71

25.70

29.21

29.62

29.59

29.79

29.48

29.46

29.88

29.75

29.23

Front half 143.91s · back half 147.80s

1650 Freestyle SCY 17:00.63 split/total mismatch

27.44

30.40

31.03

31.38

31.20

31.55

31.21

31.52

31.28

31.40

31.31

31.25

31.31

31.47

30.88

31.56

31.48

31.27

30.98

30.92

30.72

31.22

31.42

31.17

31.30

31.59

31.56

31.57

31.06

31.46

29.01

26.49

100 Backstroke SCY 51.21

24.84

26.37

Front half 24.84s · back half 26.37s

200 Backstroke SCY 1:53.72

26.09

28.85

29.51

29.27

Front half 54.94s · back half 58.78s

100 Breaststroke SCY 59.27

28.07

31.20

Front half 28.07s · back half 31.20s

100 Butterfly SCY 50.60

23.67

26.93

Front half 23.67s · back half 26.93s

200 Butterfly SCY 1:56.99

25.21

29.13

30.61

32.04

Front half 54.34s · back half 62.65s

100 Individual Medley SCY 57.65

26.62

31.03

Front half 26.62s · back half 31.03s

200 Individual Medley SCY 1:54.73

24.15

29.80

33.05

27.73

Front half 53.95s · back half 60.78s

100 Freestyle LCM 54.83

26.67

28.16

Front half 26.67s · back half 28.16s

200 Freestyle LCM 2:04.80

28.38

31.90

32.17

32.35

Front half 60.28s · back half 64.52s

400 Freestyle LCM 4:36.13

65.81

71.43

70.64

68.25

Front half 137.24s · back half 138.89s

800 Freestyle LCM 9:35.29

32.14

35.62

36.96

36.31

30.02

43.33

37.57

36.31

36.39

35.84

36.81

36.24

36.51

35.90

35.45

33.89

Front half 288.26s · back half 287.03s

1500 Freestyle LCM 18:46.82

34.04

37.43

38.87

37.66

37.27

37.26

37.75

38.03

37.36

39.04

39.25

39.23

37.72

39.24

38.73

37.65

37.04

37.20

37.13

38.15

37.38

37.49

37.29

37.17

38.12

37.28

36.95

37.69

35.79

35.61

Front half 568.88s · back half 557.94s

100 Backstroke LCM 1:00.89 split/total mismatch

29.32

2.25

Front half 29.32s · back half 31.57s

200 Backstroke LCM 2:20.64

33.16

35.20

36.81

35.47

Front half 68.36s · back half 72.28s

100 Breaststroke LCM 1:13.72

35.26

38.46

Front half 35.26s · back half 38.46s

200 Breaststroke LCM 2:49.06

37.53

44.66

43.76

43.11

Front half 82.19s · back half 86.87s

100 Butterfly LCM 58.26

27.27

30.99

Front half 27.27s · back half 30.99s

200 Butterfly LCM 2:28.56

33.28

39.05

38.77

37.46

Front half 72.33s · back half 76.23s

200 Individual Medley LCM 2:16.99

28.50

34.87

41.72

31.90

Front half 63.37s · back half 73.62s

400 Individual Medley LCM 5:24.87

33.03

40.15

43.81

41.82

48.04

46.41

37.07

34.54

Front half 158.81s · back half 166.06s

Reaction time

fastest 0.55s average 0.603s slowest 0.71s 3 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 20.99 34 swims

100 Freestyle SCY 46.58 28 swims

200 Freestyle SCY 1:41.99 23 swims

500 Freestyle SCY 4:51.71 9 swims

1650 Freestyle SCY 17:00.63 8 swims

50 Backstroke SCY 25.24 11 swims

100 Backstroke SCY 51.21 37 swims

200 Backstroke SCY 1:53.72 12 swims

50 Breaststroke SCY 28.38 10 swims

100 Breaststroke SCY 59.27 25 swims

200 Breaststroke SCY 2:16.63 8 swims

50 Butterfly SCY 23.70 9 swims

100 Butterfly SCY 50.60 21 swims

200 Butterfly SCY 1:56.99 8 swims

100 Individual Medley SCY 57.65 3 swims

200 Individual Medley SCY 1:54.73 19 swims

400 Individual Medley SCY 4:17.72 5 swims

50 Freestyle LCM 24.68 13 swims

100 Freestyle LCM 54.83 22 swims

200 Freestyle LCM 2:04.80 10 swims

400 Freestyle LCM 4:36.13 5 swims

800 Freestyle LCM 9:35.29 5 swims

1500 Freestyle LCM 18:46.82 1 swim

2000 Freestyle LCM 34:59.38 0 swims

4000 Freestyle LCM 58:29.50 1 swim

5000 Freestyle LCM 69:27.70 2 swims

50 Backstroke LCM 28.31 13 swims

100 Backstroke LCM 1:00.89 19 swims

200 Backstroke LCM 2:20.64 9 swims

50 Breaststroke LCM 33.40 3 swims

100 Breaststroke LCM 1:13.72 15 swims

200 Breaststroke LCM 2:49.06 7 swims

50 Butterfly LCM 26.79 9 swims

100 Butterfly LCM 58.26 15 swims

200 Butterfly LCM 2:28.56 2 swims

200 Individual Medley LCM 2:16.99 15 swims

400 Individual Medley LCM 5:24.87 2 swims