Joseph Keroack

Mage 19EZFLNEATSTSUN

121 plausible swims · 20 meets · 2024-03-08 → 2026-06-28

Personal records

Event	Course	Best	Date	Meet
50 Freestyle	SCY	22.23	2025-03-29	2025 EZ North Speedo Short Course Sectionals venue
100 Freestyle	SCY	46.72	2025-03-30	2025 EZ North Speedo Short Course Sectionals venue
200 Freestyle	SCY	1:41.50	2025-03-28	2025 EZ North Speedo Short Course Sectionals venue
500 Freestyle	SCY	4:45.82	2024-03-23	2024 EZ North Region Speedo Sectional Champs venue
100 Backstroke	SCY	55.22	2025-01-01	NE Swimmimg 15-18 Age Group Championships
100 Butterfly	SCY	52.14	2025-03-28	2025 EZ North Speedo Short Course Sectionals venue
200 Individual Medley	SCY	1:58.38	2025-03-30	2025 EZ North Speedo Short Course Sectionals venue
50 Freestyle	LCM	25.33	2025-07-26	2025 TYR FUTURES OCALA venue
100 Freestyle	LCM	54.37	2026-06-27	2026 NE SUN Summer Solstice fast pool
200 Freestyle	LCM	2:01.83	2026-06-28	2026 NE SUN Summer Solstice fast pool
400 Freestyle	LCM	4:19.52	2026-06-26	2026 NE SUN Summer Solstice fast pool
800 Freestyle	LCM	10:13.43	2024-06-22	2024 NE NSSC June Springfield venue
1500 Freestyle	LCM	17:49.23	2026-06-28	2026 NE SUN Summer Solstice fast pool
100 Backstroke	LCM	1:12.29	2024-06-22	2024 NE NSSC June Springfield venue
50 Butterfly	LCM	27.41	2025-01-01	2025 NE Swimming LC Senior Championships - Brown University, S#: NE25-0710CS venue
100 Butterfly	LCM	57.76	2025-07-25	2025 TYR FUTURES OCALA venue
200 Butterfly	LCM	2:16.44	2026-06-26	2026 NE SUN Summer Solstice fast pool
200 Individual Medley	LCM	2:23.33	2025-01-01	2025 NE Swimming LC Senior Championships - Brown University, S#: NE25-0710CS venue

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	22.14	flat	200 Free Relay	2025-03-30	2025 EZ North Speedo Short Course Sectionals
50 Freestyle	SCY	21.83	flying	200 Medley Relay (leg 4)	2024-03-07	2024 NE CRIM 15-19 AG Championships
50 Freestyle	SCY	20.85	flying	200 Free Relay (leg 4)	2025-03-30	2025 EZ North Speedo Short Course Sectionals
100 Freestyle	SCY	48.22	flat	400 Free Relay	2025-03-29	2025 EZ North Speedo Short Course Sectionals
100 Freestyle	SCY	47.66	flying	400 Free Relay (leg 4)	2024-12-20	2024 NE CS SCY New England Senior Meet
100 Freestyle	SCY	49.36	flying	400 Medley Relay (leg 4)	2024-03-10	2024 NE CRIM 15-19 AG Championships
200 Freestyle	SCY	1:42.88	flat	800 Free Relay	2025-03-28	2025 EZ North Speedo Short Course Sectionals
200 Freestyle	SCY	1:45.35	flying	800 Free Relay (leg 2)	2024-03-22	2024 EZ North Region Speedo Sectional Champs
50 Butterfly	SCY	23.31	flying	200 Medley Relay (leg 3)	2025-03-29	2025 EZ North Speedo Short Course Sectionals
100 Butterfly	SCY	52.24	flying	400 Medley Relay (leg 3)	2025-03-02	2025 NE CRIM 15-18 AG Championships
100 Freestyle	LCM	55.69	flying	400 Medley Relay (leg 4)	2025-07-12	2025 NE CS LCM Senior Championships
100 Freestyle	LCM	54.22	flying	400 Free Relay (leg 4)	2024-07-14	2024 NE BGSC LCM Senior Championships
200 Freestyle	LCM	2:05.55	flying	800 Free Relay (leg 4)	2025-07-10	2025 NE CS LCM Senior 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.

PR splits

100 Freestyle SCY 46.72

22.65

24.07

Front half 22.65s · back half 24.07s

200 Freestyle SCY 1:41.50

23.39

25.50

26.12

26.49

Front half 48.89s · back half 52.61s

500 Freestyle SCY 4:45.82

26.03

29.05

29.06

28.19

28.51

29.15

29.44

29.27

29.30

27.82

Front half 140.84s · back half 144.98s

100 Backstroke SCY 55.22 split/total mismatch

27.07

1.08

Front half 27.07s · back half 28.15s

100 Butterfly SCY 52.14

24.85

27.29

Front half 24.85s · back half 27.29s

200 Individual Medley SCY 1:58.38

25.37

29.58

35.87

27.56

Front half 54.95s · back half 63.43s

100 Freestyle LCM 54.37

26.08

28.29

Front half 26.08s · back half 28.29s

200 Freestyle LCM 2:01.83

27.73

30.33

31.64

32.13

Front half 58.06s · back half 63.77s

400 Freestyle LCM 4:19.52

29.40

31.50

32.58

33.14

33.52

33.90

32.84

32.64

Front half 126.62s · back half 132.90s

800 Freestyle LCM 10:13.43

33.43

37.30

38.69

38.95

36.29

40.78

38.47

39.49

39.52

39.04

39.71

38.96

38.41

38.78

39.03

36.58

Front half 303.40s · back half 310.03s

1500 Freestyle LCM 17:49.23

24.76

21.42

19.28

34.94

35.73

34.64

36.03

35.09

36.31

27.87

43.83

35.37

36.29

27.27

43.96

35.79

36.76

36.03

36.18

36.31

36.08

36.33

37.60

36.42

36.35

36.98

36.90

96.46

42.25

100 Backstroke LCM 1:12.29

34.75

37.54

Front half 34.75s · back half 37.54s

100 Butterfly LCM 57.76 RT 0.65s

26.88

30.88

Front half 26.88s · back half 30.88s

200 Butterfly LCM 2:16.44

29.61

34.09

35.86

36.88

Front half 63.70s · back half 72.74s

200 Individual Medley LCM 2:23.33 split/total mismatch

29.46

36.74

44.96

32.17

Reaction time

fastest 0.65s average 0.657s slowest 0.67s 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 22.23 11 swims

100 Freestyle SCY 46.72 12 swims

200 Freestyle SCY 1:41.50 13 swims

500 Freestyle SCY 4:45.82 9 swims

100 Backstroke SCY 55.22 4 swims

100 Butterfly SCY 52.14 11 swims

200 Individual Medley SCY 1:58.38 4 swims

50 Freestyle LCM 25.33 9 swims

100 Freestyle LCM 54.37 11 swims

200 Freestyle LCM 2:01.83 8 swims

400 Freestyle LCM 4:19.52 6 swims

800 Freestyle LCM 10:13.43 1 swim

1500 Freestyle LCM 17:49.23 4 swims

100 Backstroke LCM 1:12.29 1 swim

50 Butterfly LCM 27.41 3 swims

100 Butterfly LCM 57.76 8 swims

200 Butterfly LCM 2:16.44 3 swims

200 Individual Medley LCM 2:23.33 3 swims