Leif Cox

Mage 14COFLMTJHNJYODA

454 plausible swims · 70 meets · 2018-10-27 → 2026-06-14

Personal records

Event	Course	Best	Cut	Date	Meet
25 Freestyle	SCY	11.61		2026-01-11	2026 CO NJ Narwhal Invitational fast pool
50 Freestyle	SCY	24.48	AA+0.99s to AAA	2026-02-28	2026 CO CSI SC Age Group Championships fast pool
100 Freestyle	SCY	53.45	AA+2.26s to AAA	2026-03-14	Mile High Championship Invitational fast pool
200 Freestyle	SCY	1:59.22	A+2.13s to AA	2026-03-28	2026 Southwest Age Group Regional fast pool
500 Freestyle	SCY	5:15.11	AA+11.82s to AAA	2026-03-28	2026 Southwest Age Group Regional fast pool
1000 Freestyle	SCY	11:54.28	BB+27.29s to A	2025-01-01	2025 CO NJ Pineapple Invite
1650 Freestyle	SCY	19:01.45	A+37.96s to AA	2026-03-01	2026 CO CSI SC Age Group Championships fast pool
25 Backstroke	SCY	40.92		2018-10-27	2018 CO Jeffco 10&U Grand Prix #1 slow pool
50 Backstroke	SCY	29.29	BB+0.40s to A	2026-02-14	2026 CO NJ Groundhog Invite fast pool
100 Backstroke	SCY	1:01.70	BB+0.51s to A	2026-03-15	Mile High Championship Invitational fast pool
200 Backstroke	SCY	2:14.44	BB+1.45s to A	2026-03-01	2026 CO CSI SC Age Group Championships fast pool
25 Breaststroke	SCY	39.86		2018-10-27	2018 CO Jeffco 10&U Grand Prix #1 slow pool
50 Breaststroke	SCY	38.40	B+2.61s to BB	2024-12-15	2024 CO NJ Narwahl Invitational fast pool
100 Breaststroke	SCY	1:22.60	+2.01s to B	2024-11-17	2024 CO TOPS Fall Invite venue
200 Breaststroke	SCY	2:42.34	BB+12.05s to A	2026-03-15	Mile High Championship Invitational fast pool
50 Butterfly	SCY	27.31	A+0.02s to AA	2026-02-14	2026 CO NJ Groundhog Invite fast pool
100 Butterfly	SCY	1:01.15	BB+0.76s to A	2026-02-15	2026 CO NJ Groundhog Invite fast pool
200 Butterfly	SCY	2:24.92	BB+10.43s to A	2025-01-01	2025 CO CSI Pioneer Open
100 Individual Medley	SCY	56.80		2025-03-20	Southwest Age Group Regional 2025
200 Individual Medley	SCY	2:16.37	BB+0.98s to A	2026-03-30	2026 Southwest Age Group Regional fast pool
400 Individual Medley	SCY	4:54.28	BB+4.79s to A	2026-02-28	2026 CO CSI SC Age Group Championships fast pool
50 Freestyle	LCM	27.33	AA+0.44s to AAA	2026-06-12	2026 CO CSI Long Course Open fast pool
100 Freestyle	LCM	1:00.34	AA+1.35s to AAA	2026-06-14	2026 CO CSI Long Course Open fast pool
200 Freestyle	LCM	2:12.76	AA+3.87s to AAA	2026-06-13	2026 CO CSI Long Course Open fast pool
400 Freestyle	LCM	4:47.17	AA+12.18s to AAA	2026-06-14	2026 CO CSI Long Course Open fast pool
800 Freestyle	LCM	9:17.33	AAA+13.64s to AAAA	2025-07-10	2025 CO CSI Open Water Championships venue
1500 Freestyle	LCM	19:52.15	A+49.26s to AA	2026-06-07	2026 CO NJ Summer Solstice Invite fast pool
50 Backstroke	LCM	35.14	BB+1.25s to A	2025-07-25	2025 RAFC Last Splash Invitational venue
100 Backstroke	LCM	1:12.68	BB+0.99s to A	2026-06-13	2026 CO CSI Long Course Open fast pool
200 Backstroke	LCM	2:33.22	A+3.73s to AA	2026-06-12	2026 CO CSI Long Course Open fast pool
50 Breaststroke	LCM	40.90	BB+3.11s to A	2026-04-11	2026 CO TOPS SBL Pentathlon 13&O venue
100 Breaststroke	LCM	1:34.91	+0.92s to B	2025-06-08	2025 CO NJ Summer Solstice Invitational fast pool
200 Breaststroke	LCM	3:15.65	B+6.26s to BB	2025-06-27	2025 CO Zone 2 VMAC Meet venue
50 Butterfly	LCM	30.80	A+0.21s to AA	2026-06-06	2026 CO NJ Summer Solstice Invite fast pool
100 Butterfly	LCM	1:09.13	BB+0.24s to A	2026-06-12	2026 CO CSI Long Course Open fast pool
200 Butterfly	LCM	2:41.50	BB+7.11s to A	2026-06-06	2026 CO NJ Summer Solstice Invite fast pool
200 Individual Medley	LCM	2:39.38	BB+2.49s to A	2025-07-27	2025 RAFC Last Splash Invitational venue
400 Individual Medley	LCM	5:48.32	BB+12.83s to A	2026-06-06	2026 CO NJ Summer Solstice Invite fast pool

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 14.

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	27.46	flat	200 Free Relay	2024-12-07	2024 CO CSI Pioneer Open
50 Freestyle	SCY	25.53	flying	200 Free Relay (leg 3)	2025-03-22	Southwest Age Group Regional 2025
100 Freestyle	SCY	56.47	flying	400 Free Relay (leg 3)	2025-03-23	Southwest Age Group Regional 2025
100 Backstroke	SCY	1:08.87	flat	400 Medley Relay	2025-03-21	Southwest Age Group Regional 2025
50 Butterfly	SCY	30.72	flying	200 Medley Relay (leg 3)	2024-12-06	2024 CO CSI Pioneer Open
50 Freestyle	LCM	28.61	flat	200 Free Relay	2026-06-07	2026 CO NJ Summer Solstice Invite
50 Freestyle	LCM	33.59	flying	200 Medley Relay (leg 4)	2023-07-29	2023 CO CSI Age Group LC State Championships
50 Freestyle	LCM	32.20	flying	200 Free Relay (leg 2)	2024-07-28	2024 CO CSI LC Age Group Championships
50 Breaststroke	LCM	47.64	flying	200 Medley Relay (leg 2)	2024-07-27	2024 CO CSI 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 13-14 · SCY

3768 points (6/6 events)

Event	Time	Points
500 FR SCY	5:15.11	773
200 BK SCY	2:14.44	642
200 BR SCY	2:42.34	527
200 FL SCY	2:24.92	534
200 IM SCY	2:16.37	655
400 IM SCY	4:54.28	637

IMR 13-14 · LCM

3145 points (5/5 events)

Event	Time	Points
200 FR LCM	2:12.76	795
100 BK LCM	1:12.68	644
100 BR LCM	1:34.91	406
100 FL LCM	1:09.13	663
200 IM LCM	2:39.38	637

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

PR splits

100 Freestyle SCY 53.45

25.27

28.18

Front half 25.27s · back half 28.18s

200 Freestyle SCY 1:59.22

26.79

30.12

31.34

30.97

Front half 56.91s · back half 62.31s

500 Freestyle SCY 5:15.11

28.10

30.82

31.49

31.82

32.23

32.27

32.31

32.43

32.48

31.16

Front half 154.46s · back half 160.65s

1650 Freestyle SCY 19:01.45

29.07

33.49

34.24

34.79

35.39

35.23

34.84

35.07

35.02

35.03

34.90

34.84

34.99

34.90

35.11

34.64

34.49

34.57

34.38

34.24

34.17

34.59

34.71

34.93

34.51

35.10

35.20

35.41

35.59

35.04

35.55

34.10

33.32

100 Backstroke SCY 1:01.70

30.16

31.54

Front half 30.16s · back half 31.54s

200 Backstroke SCY 2:14.44

31.12

34.38

35.01

33.93

Front half 65.50s · back half 68.94s

100 Breaststroke SCY 1:22.60

38.85

43.75

Front half 38.85s · back half 43.75s

200 Breaststroke SCY 2:42.34

35.81

41.55

42.75

42.23

Front half 77.36s · back half 84.98s

100 Butterfly SCY 1:01.15

28.49

32.66

Front half 28.49s · back half 32.66s

200 Individual Medley SCY 2:16.37

29.00

34.94

40.76

31.67

Front half 63.94s · back half 72.43s

400 Individual Medley SCY 4:54.28

29.92

35.07

36.57

37.40

43.89

44.94

33.38

33.11

Front half 138.96s · back half 155.32s

100 Freestyle LCM 1:00.34

29.07

31.27

Front half 29.07s · back half 31.27s

200 Freestyle LCM 2:12.76

29.67

32.47

34.84

35.78

Front half 62.14s · back half 70.62s

400 Freestyle LCM 4:47.17

31.88

35.98

36.94

36.19

36.66

36.21

37.09

36.22

Front half 140.99s · back half 146.18s

1500 Freestyle LCM 19:52.15

33.65

38.20

38.96

39.44

39.75

40.30

40.00

40.42

40.79

40.64

40.40

40.06

40.21

39.78

40.05

39.87

39.90

40.14

40.01

40.26

40.48

40.39

40.42

40.11

40.61

39.86

39.94

39.51

39.81

38.19

Front half 592.65s · back half 599.50s

100 Backstroke LCM 1:12.68

35.29

37.39

Front half 35.29s · back half 37.39s

200 Backstroke LCM 2:33.22

36.70

38.23

39.69

38.60

Front half 74.93s · back half 78.29s

100 Breaststroke LCM 1:34.91

44.48

50.43

Front half 44.48s · back half 50.43s

200 Breaststroke LCM 3:15.65

45.36

51.18

50.22

48.89

Front half 96.54s · back half 99.11s

100 Butterfly LCM 1:09.13

31.82

37.31

Front half 31.82s · back half 37.31s

200 Butterfly LCM 2:41.50

34.79

40.04

42.86

43.81

Front half 74.83s · back half 86.67s

200 Individual Medley LCM 2:39.38

32.57

41.18

49.02

36.61

Front half 73.75s · back half 85.63s

400 Individual Medley LCM 5:48.32

34.70

40.82

44.62

43.39

53.18

53.81

39.24

38.56

Front half 163.53s · back half 184.79s

Reaction time

fastest 0.67s average 0.670s slowest 0.67s 1 electronic start

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.

25 Freestyle SCY 11.61 5 swims

50 Freestyle SCY 24.48 35 swims

100 Freestyle SCY 53.45 28 swims

200 Freestyle SCY 1:59.22 22 swims

500 Freestyle SCY 5:15.11 15 swims

1000 Freestyle SCY 11:54.28 1 swim

1650 Freestyle SCY 19:01.45 2 swims

25 Backstroke SCY 40.92 1 swim

50 Backstroke SCY 29.29 16 swims

100 Backstroke SCY 1:01.70 24 swims

200 Backstroke SCY 2:14.44 9 swims

25 Breaststroke SCY 39.86 1 swim

50 Breaststroke SCY 38.40 18 swims

100 Breaststroke SCY 1:22.60 9 swims

200 Breaststroke SCY 2:42.34 3 swims

50 Butterfly SCY 27.31 22 swims

100 Butterfly SCY 1:01.15 17 swims

200 Butterfly SCY 2:24.92 7 swims

100 Individual Medley SCY 56.80 19 swims

200 Individual Medley SCY 2:16.37 12 swims

400 Individual Medley SCY 4:54.28 3 swims

50 Freestyle LCM 27.33 22 swims

100 Freestyle LCM 1:00.34 22 swims

200 Freestyle LCM 2:12.76 14 swims

400 Freestyle LCM 4:47.17 10 swims

800 Freestyle LCM 9:17.33 3 swims

1500 Freestyle LCM 19:52.15 1 swim

50 Backstroke LCM 35.14 12 swims

100 Backstroke LCM 1:12.68 23 swims

200 Backstroke LCM 2:33.22 12 swims

50 Breaststroke LCM 40.90 8 swims

100 Breaststroke LCM 1:34.91 3 swims

200 Breaststroke LCM 3:15.65 1 swim

50 Butterfly LCM 30.80 18 swims

100 Butterfly LCM 1:09.13 17 swims

200 Butterfly LCM 2:41.50 6 swims

200 Individual Medley LCM 2:39.38 11 swims

400 Individual Medley LCM 5:48.32 2 swims