Colton Rosinski

Mage 17MNSEMS

135 plausible swims · 27 meets · 2017-06-25 → 2026-06-14

Personal records

Event	Course	Best	Cut	Date	Meet
50 Freestyle	SCY	22.77	AA+0.68s to AAA	2026-03-14	2026 MN AQJT Senior SC State Championship venue
100 Freestyle	SCY	52.25	A+1.86s to AA	2025-11-08	2025 MN WOLF HOWL AT THE MOON INVITE venue
200 Freestyle	SCY	2:04.04	BB+8.05s to A	2024-03-02	2024 MN STRM Minnesota Regional Championship venue
500 Freestyle	SCY	5:24.40	BB+9.51s to A	2025-11-23	2025 MN Hast Nov IMX fast pool
50 Backstroke	SCY	26.41	A+0.72s to AA	2026-03-13	2026 MN AQJT Senior SC State Championship venue
100 Backstroke	SCY	56.80	A+1.91s to AA	2026-03-14	2026 MN AQJT Senior SC State Championship venue
200 Backstroke	SCY	2:01.13	A+1.14s to AA	2026-03-14	2026 MN AQJT Senior SC State Championship venue
200 Breaststroke	SCY	2:31.10	BB+10.31s to A	2025-11-23	2025 MN Hast Nov IMX fast pool
100 Butterfly	SCY	1:03.32	B+1.93s to BB	2025-10-26	2025 MN SEMS Sharktober Invite venue
200 Butterfly	SCY	2:15.35	BB+7.86s to A	2025-11-23	2025 MN Hast Nov IMX fast pool
100 Individual Medley	SCY	1:02.83		2025-06-12	2025 MN SEMS June 12 Full Team Intrasquad slow pool
200 Individual Medley	SCY	2:12.30	BB+4.11s to A	2025-06-12	2025 MN SEMS June 12 Full Team Intrasquad slow pool
400 Individual Medley	SCY	4:45.92	BB+9.93s to A	2025-11-22	2025 MN Hast Nov IMX fast pool
50 Freestyle	LCM	26.29	AA+0.80s to AAA	2025-07-20	2025 MN STRM Minnesota Regional Championship venue
100 Freestyle	LCM	58.36	A+0.27s to AA	2025-07-18	2025 MN STRM Minnesota Regional Championship venue
200 Freestyle	LCM	2:18.52	BB+5.23s to A	2026-05-03	2026 MN SEMS LC Invite venue
800 Freestyle	LCM	11:06.26	B+26.27s to BB	2017-06-25	2025 MN MAN Red White & Blue Invite
1500 Freestyle	LCM	20:42.84	B+14.85s to BB	2025-06-22	2025 MN MAN Red White & Blue Invite venue
50 Backstroke	LCM	30.48	AA+1.09s to AAA	2026-05-31	2026 MN WOLF HUFF N PUFF INVITE venue
100 Backstroke	LCM	1:05.50	A+0.81s to AA	2024-07-12	2024 MN MTKA Minnesota Regional Championship
200 Backstroke	LCM	2:24.75	A+3.76s to AA	2025-07-20	2025 MN STRM Minnesota Regional Championship venue
50 Breaststroke	LCM	32.78	AA+0.69s to AAA	2026-05-30	2026 MN WOLF HUFF N PUFF INVITE venue
100 Breaststroke	LCM	1:17.68	BB+2.19s to A	2026-05-31	2026 MN WOLF HUFF N PUFF INVITE venue
200 Breaststroke	LCM	3:03.34	B+4.85s to BB	2025-06-22	2025 MN MAN Red White & Blue Invite venue
50 Butterfly	LCM	31.23	BB+1.04s to A	2025-05-18	2025 MN STRM Spring Startup venue
100 Butterfly	LCM	1:10.34	BB+5.15s to A	2025-05-31	2025 MN WOLF HUFF N PUFF INVITE venue
200 Individual Medley	LCM	2:34.58	BB+5.99s to A	2026-05-08	2026 MN STRM Spring Startup venue
400 Individual Medley	LCM	5:28.55	BB+9.56s to A	2026-05-29	2026 MN WOLF HUFF N PUFF INVITE venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 17.

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 Backstroke	LCM	29.34	flat	200 Medley Relay	2024-07-18	2024 MN RSC Minnesota LC 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

3513 points (6/6 events)

Event	Time	Points
500 FR SCY	5:24.40	592
200 BK SCY	2:01.13	706
200 BR SCY	2:31.10	522
200 FL SCY	2:15.35	533
200 IM SCY	2:12.30	584
400 IM SCY	4:45.92	576

IMR 17-18 · LCM

2941 points (5/5 events)

Event	Time	Points
200 FR LCM	2:18.52	567
100 BK LCM	1:05.50	701
100 BR LCM	1:17.68	588
100 FL LCM	1:10.34	504
200 IM LCM	2:34.58	581

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

PR splits

100 Freestyle SCY 52.25

24.63

27.62

Front half 24.63s · back half 27.62s

200 Freestyle SCY 2:04.04

28.77

32.15

32.98

30.14

Front half 60.92s · back half 63.12s

500 Freestyle SCY 5:24.40

29.29

32.93

33.63

32.88

33.18

32.42

32.56

32.96

32.91

31.64

Front half 161.91s · back half 162.49s

100 Backstroke SCY 56.80 RT 0.60s

27.51

29.29

Front half 27.51s · back half 29.29s

200 Backstroke SCY 2:01.13 RT 0.57s

28.12

30.57

31.22

Front half 58.69s · back half 62.44s

200 Breaststroke SCY 2:31.10

33.72

38.55

39.48

39.35

Front half 72.27s · back half 78.83s

100 Butterfly SCY 1:03.32

28.71

34.61

Front half 28.71s · back half 34.61s

200 Butterfly SCY 2:15.35

30.23

35.34

36.30

33.48

Front half 65.57s · back half 69.78s

100 Individual Medley SCY 1:02.83

28.88

33.95

Front half 28.88s · back half 33.95s

200 Individual Medley SCY 2:12.30

28.28

33.88

38.27

31.87

Front half 62.16s · back half 70.14s

400 Individual Medley SCY 4:45.92

30.52

36.72

35.45

35.81

41.59

41.12

33.83

30.88

Front half 138.50s · back half 147.42s

100 Freestyle LCM 58.36

28.13

30.23

Front half 28.13s · back half 30.23s

200 Freestyle LCM 2:18.52

31.51

35.12

37.07

34.82

Front half 66.63s · back half 71.89s

1500 Freestyle LCM 20:42.84

36.55

42.34

41.86

41.84

41.25

42.21

41.99

42.63

41.23

42.23

41.98

42.32

41.62

42.34

41.13

42.74

41.46

42.22

41.90

41.84

41.04

41.70

41.04

40.44

40.69

40.99

41.41

41.24

37.13

43.48

Front half 623.52s · back half 619.32s

100 Backstroke LCM 1:05.50 split/total mismatch

31.92

1.66

Front half 31.92s · back half 33.58s

200 Backstroke LCM 2:24.75

34.16

37.06

37.39

36.14

Front half 71.22s · back half 73.53s

100 Breaststroke LCM 1:17.68

35.01

42.67

Front half 35.01s · back half 42.67s

200 Breaststroke LCM 3:03.34

42.15

48.28

47.27

45.64

Front half 90.43s · back half 92.91s

100 Butterfly LCM 1:10.34

32.87

37.47

Front half 32.87s · back half 37.47s

200 Individual Medley LCM 2:34.58

33.69

40.15

47.89

32.85

Front half 73.84s · back half 80.74s

400 Individual Medley LCM 5:28.55

33.05

40.55

43.73

41.68

47.81

48.87

37.85

35.01

Front half 159.01s · back half 169.54s

Reaction time

fastest 0.57s average 0.602s slowest 0.66s 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 22.77 9 swims

100 Freestyle SCY 52.25 7 swims

200 Freestyle SCY 2:04.04 3 swims

500 Freestyle SCY 5:24.40 1 swim

50 Backstroke SCY 26.41 2 swims

100 Backstroke SCY 56.80 8 swims

200 Backstroke SCY 2:01.13 7 swims

200 Breaststroke SCY 2:31.10 1 swim

100 Butterfly SCY 1:03.32 3 swims

200 Butterfly SCY 2:15.35 2 swims

100 Individual Medley SCY 1:02.83 3 swims

200 Individual Medley SCY 2:12.30 3 swims

400 Individual Medley SCY 4:45.92 2 swims

50 Freestyle LCM 26.29 14 swims

100 Freestyle LCM 58.36 10 swims

200 Freestyle LCM 2:18.52 2 swims

800 Freestyle LCM 11:06.26 2 swims

1500 Freestyle LCM 20:42.84 1 swim

50 Backstroke LCM 30.48 4 swims

100 Backstroke LCM 1:05.50 12 swims

200 Backstroke LCM 2:24.75 12 swims

50 Breaststroke LCM 32.78 5 swims

100 Breaststroke LCM 1:17.68 7 swims

200 Breaststroke LCM 3:03.34 3 swims

50 Butterfly LCM 31.23 2 swims

100 Butterfly LCM 1:10.34 5 swims

200 Individual Medley LCM 2:34.58 3 swims

400 Individual Medley LCM 5:28.55 2 swims