Mason DeRose

Mage 15NECSSOLO

325 plausible swims · 54 meets · 2023-05-19 → 2026-06-28

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	24.56	A+0.87s to AA	2026-01-01	2026 ne cs summer classic results
100 Freestyle	SCY	52.64	A+0.65s to AA	2026-01-01	2026 ne cs summer classic results
200 Freestyle	SCY	1:51.55	AA+2.86s to AAA	2026-01-01	2026 ne cs summer classic results
500 Freestyle	SCY	5:18.09	A+9.00s to AA	2026-03-14	2026 NE NSSC NE Cup Championship fast pool
1000 Freestyle	SCY	11:35.55	BB+23.76s to A	2025-01-01	2025 ne cs fall classic results
50 Backstroke	SCY	28.78	BB+0.79s to A	2026-03-15	2026 NE NSSC NE Cup Championship fast pool
100 Backstroke	SCY	58.87	A+1.78s to AA	2026-01-01	2026 ne cs summer classic results
200 Backstroke	SCY	2:03.88	AA+4.59s to AAA	2026-03-13	2026 NE NSSC NE Cup Championship
50 Breaststroke	SCY	36.58	B+1.79s to BB	2025-01-01	2025 ne cs fall classic results
100 Breaststroke	SCY	1:20.14	+1.55s to B	2025-10-17	2025 NE NSSC Beede Halloween Classic
200 Breaststroke	SCY	2:54.08	+2.59s to B	2025-01-01	2025 SHAWMUT CANDY CANE CLASSIC
50 Butterfly	SCY	26.09	AA+0.70s to AAA	2026-01-01	2026 ne cs summer classic results
100 Butterfly	SCY	56.02	AA+2.03s to AAA	2026-06-27	2026 NE CS Summer Classic venue
100 Individual Medley	SCY	1:03.62		2025-01-01	2025 ne cs 14 0u imr pentathlon results
200 Individual Medley	SCY	2:13.99	BB+1.80s to A	2026-03-15	2026 NE NSSC NE Cup Championship fast pool
400 Individual Medley	SCY	4:47.88	BB+3.69s to A	2026-01-30	2026 NE CS Silver Championships fast pool
50 Freestyle	LCM	29.28	BB+0.69s to A	2026-01-01	Season Opener Hosted by Commonwealth Swimming Seekonk
100 Freestyle	LCM	1:01.94	A+2.25s to AA	2026-01-01	2026 ne cs spring fling results
200 Freestyle	LCM	2:09.55	AA+3.76s to AAA	2026-01-01	NE CS 2026 Summer Solstice at Brown University
400 Freestyle	LCM	5:06.33	BB+14.24s to A	2025-01-01	2025 ne cs seacoast classic results
50 Backstroke	LCM	32.33	A+0.54s to AA	2026-01-01	NE CS 2026 Summer Solstice at Brown University
100 Backstroke	LCM	1:10.88	BB+1.29s to A	2026-01-01	NE CS 2026 Summer Solstice at Brown University
200 Backstroke	LCM	2:35.86	BB+4.77s to A	2026-01-01	2026 ne cs spring fever results
50 Breaststroke	LCM	41.06	B+1.47s to BB	2026-01-01	NE CS 2026 Summer Solstice at Brown University
100 Breaststroke	LCM	1:31.49	+0.10s to B	2026-01-01	NE CS 2026 Summer Solstice at Brown University
200 Breaststroke	LCM	3:26.36	+6.47s to B	2025-06-13	2025 NE CS Jenny Thompson Classic
50 Butterfly	LCM	29.76	AA+1.07s to AAA	2026-01-01	NE CS 2026 Summer Solstice at Brown University
100 Butterfly	LCM	1:03.16	AA+1.47s to AAA	2026-01-01	NE CS 2026 Summer Solstice at Brown University
200 Individual Medley	LCM	2:34.04	BB+0.85s to A	2026-01-01	2026 ne cs spring fever results

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 15.

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	24.24	flying	200 Free Relay (leg 4)	2026-03-15	2026 NE NSSC NE Cup Championship
100 Freestyle	SCY	58.33	flat	400 Free Relay	2025-01-17	2025 NE CS Bronze Championships
100 Breaststroke	SCY	1:22.78	flying	400 Medley Relay (leg 2)	2025-01-17	2025 NE CS Bronze Championships
50 Butterfly	SCY	27.29	flying	200 Medley Relay (leg 3)	2025-12-13	2025 NE SHAWMUT Candy Cane Classic

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 15-16 · SCY

2933 points (5/6 events — incomplete)

Event	Time	Points
500 FR SCY	5:18.09	655
200 BK SCY	2:03.88	713
200 BR SCY	2:54.08	372
200 IM SCY	2:13.99	602
400 IM SCY	4:47.88	591
200 FL SCY	—	0

IMR 15-16 · LCM

3118 points (5/5 events)

Event	Time	Points
200 FR LCM	2:09.55	745
100 BK LCM	1:10.88	591
100 BR LCM	1:31.49	394
100 FL LCM	1:03.16	758
200 IM LCM	2:34.04	630

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

PR splits

100 Freestyle SCY 52.64 split/total mismatch

25.80

1.04

Front half 25.80s · back half 26.84s

200 Freestyle SCY 1:51.55 split/total mismatch

26.02

28.28

28.71

28.54

500 Freestyle SCY 5:18.09

29.38

32.08

31.99

32.71

32.29

32.21

32.24

32.20

32.09

30.90

Front half 158.45s · back half 159.64s

1000 Freestyle SCY 11:35.55 split/total mismatch

320.56

29.66

32.98

33.78

34.87

32.51

34.56

35.28

35.07

35.63

32.99

34.96

35.41

35.72

35.35

35.31

35.45

34.83

35.22

324.09

35.49

35.84

35.91

34.23

32.13

34.26

100 Backstroke SCY 58.87 split/total mismatch

28.54

1.79

Front half 28.54s · back half 30.33s

200 Backstroke SCY 2:03.88 split/total mismatch

33.58

33.54

33.81

33.87

100 Breaststroke SCY 1:20.14 split/total mismatch

38.24

3.66

Front half 38.24s · back half 41.90s

200 Breaststroke SCY 2:54.08 split/total mismatch

38.93

44.78

45.25

45.12

100 Butterfly SCY 56.02

27.18

28.84

Front half 27.18s · back half 28.84s

100 Individual Medley SCY 1:03.62 split/total mismatch

30.62

2.38

Front half 30.62s · back half 33.00s

200 Individual Medley SCY 2:13.99

27.90

34.39

41.10

30.60

Front half 62.29s · back half 71.70s

400 Individual Medley SCY 4:47.88

28.66

32.95

35.55

36.10

43.43

44.90

33.66

32.63

Front half 133.26s · back half 154.62s

100 Freestyle LCM 1:01.94 split/total mismatch

30.26

1.42

Front half 30.26s · back half 31.68s

200 Freestyle LCM 2:09.55 split/total mismatch

29.53

2.97

1.07

0.38

Front half 32.50s · back half 97.05s

400 Freestyle LCM 5:06.33 split/total mismatch

34.42

38.26

38.42

38.93

39.22

39.79

38.50

38.79

100 Backstroke LCM 1:10.88 split/total mismatch

34.22

2.44

Front half 34.22s · back half 36.66s

200 Backstroke LCM 2:35.86 split/total mismatch

37.21

39.54

40.67

38.44

100 Breaststroke LCM 1:31.49 split/total mismatch

42.52

6.45

Front half 42.52s · back half 48.97s

200 Breaststroke LCM 3:26.36 split/total mismatch

45.44

5.69

3.62

0.29

Front half 51.13s · back half 155.23s

100 Butterfly LCM 1:03.16 split/total mismatch

29.81

3.54

Front half 29.81s · back half 33.35s

200 Individual Medley LCM 2:34.04 split/total mismatch

30.79

38.45

49.66

35.14

Progression

Faster times are higher. One card per event, all courses & history.

50 Freestyle SCY 24.56 23 swims

100 Freestyle SCY 52.64 30 swims

200 Freestyle SCY 1:51.55 24 swims

500 Freestyle SCY 5:18.09 8 swims

1000 Freestyle SCY 11:35.55 2 swims

50 Backstroke SCY 28.78 4 swims

100 Backstroke SCY 58.87 27 swims

200 Backstroke SCY 2:03.88 10 swims

50 Breaststroke SCY 36.58 2 swims

100 Breaststroke SCY 1:20.14 12 swims

200 Breaststroke SCY 2:54.08 6 swims

50 Butterfly SCY 26.09 8 swims

100 Butterfly SCY 56.02 27 swims

100 Individual Medley SCY 1:03.62 8 swims

200 Individual Medley SCY 2:13.99 17 swims

400 Individual Medley SCY 4:47.88 6 swims

50 Freestyle LCM 29.28 16 swims

100 Freestyle LCM 1:01.94 13 swims

200 Freestyle LCM 2:09.55 11 swims

400 Freestyle LCM 5:06.33 2 swims

50 Backstroke LCM 32.33 7 swims

100 Backstroke LCM 1:10.88 14 swims

200 Backstroke LCM 2:35.86 4 swims

50 Breaststroke LCM 41.06 4 swims

100 Breaststroke LCM 1:31.49 10 swims

200 Breaststroke LCM 3:26.36 5 swims

50 Butterfly LCM 29.76 5 swims

100 Butterfly LCM 1:03.16 13 swims

200 Individual Medley LCM 2:34.04 7 swims