Ezra Robertson-Marsh

Mage 13STTXLAUNWLOO

252 plausible swims · 37 meets · 2024-01-12 → 2026-07-12

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 26.08 A+0.49s to AA·+3.19s to Sectionals 2026-01-11 2026 ST TXLA New Year's Classic Invite venue
100 Freestyle SCY 56.79 A+1.30s to AA·+7.30s to Sectionals 2026-02-21 2026 ST AAAA SC STAGS fast pool
200 Freestyle SCY 2:02.66 A+1.27s to AA·+14.17s to Sectionals 2026-02-20 2026 ST AAAA SC STAGS fast pool
500 Freestyle SCY 5:47.72 BB+6.03s to A·+54.43s to Sectionals 2025-09-27 2025 ST ASC IMR IMX Challenge venue
50 Backstroke SCY 29.10 A+0.01s to AA·+2.71s to Sectionals 2025-10-11 2025 ST ASC Bob Thompson Open venue
100 Backstroke SCY 1:02.44 A+1.35s to AA·+5.95s to Sectionals 2025-10-12 2025 ST ASC Bob Thompson Open venue
200 Backstroke SCY 2:17.26 A+4.07s to AA·+11.87s to Sectionals 2025-12-07 2025 ST LSAC 5th Annual Graceland venue
50 Breaststroke SCY 36.03 BB+1.34s to A·+5.74s to Sectionals 2025-12-06 2025 ST LSAC 5th Annual Graceland venue
100 Breaststroke SCY 1:21.24 B+2.95s to BB·+16.95s to Sectionals 2025-09-27 2025 ST ASC IMR IMX Challenge venue
200 Breaststroke SCY 3:01.11 B+11.22s to BB·+38.32s to Sectionals 2025-01-18 2025 ST AQTX B Champs North venue
50 Butterfly SCY 27.75 AA+0.46s to AAA·+2.86s to Sectionals 2026-02-21 2026 ST AAAA SC STAGS fast pool
100 Butterfly SCY 1:02.86 A+2.27s to AA·+9.27s to Sectionals 2026-02-22 2026 ST AAAA SC STAGS fast pool
200 Butterfly SCY 2:19.75 A+3.96s to AA·+18.26s to Sectionals 2026-02-20 2026 ST AAAA SC STAGS fast pool
100 Individual Medley SCY 1:04.32 2026-02-21 2026 ST AAAA SC STAGS fast pool
200 Individual Medley SCY 2:18.55 A+3.26s to AA·+16.16s to Sectionals 2026-02-22 2026 ST AAAA SC STAGS fast pool
400 Individual Medley SCY 4:58.77 A+8.98s to AA·+40.48s to Sectionals 2025-12-05 2025 ST LSAC 5th Annual Graceland venue
50 Freestyle LCM 28.54 AA+0.55s to AAA·+2.25s to Sectionals 2026-07-12 2026 ST NIST LC STAGS venue
100 Freestyle LCM 1:04.07 AA+2.58s to AAA·+7.38s to Sectionals 2026-05-16 2026 ST TXLA 11&O End of School Splash venue
200 Freestyle LCM 2:15.88 AA+2.29s to AAA·+11.89s to Sectionals 2026-07-12 2026 ST NIST LC STAGS venue
400 Freestyle LCM 5:03.25 A+7.56s to AA·+40.16s to Sectionals 2025-07-12 2025 ST AAAA STAGS LC Championship venue
50 Backstroke LCM 31.85 AAA+0.96s to AAAA·+0.86s to Sectionals 2026-07-12 2026 ST NIST LC STAGS venue
100 Backstroke LCM 1:07.53 AAA+1.94s to AAAA·+1.34s to Sectionals 2026-07-12 2026 ST NIST LC STAGS venue
200 Backstroke LCM 2:25.99 AAA+3.60s to AAAA·+1.70s to Sectionals 2026-07-10 2026 ST NIST LC STAGS venue
50 Breaststroke LCM 45.59 B+3.00s to BB·+10.50s to Sectionals 2025-05-17 2025 ST ASC Spring Showcase venue
100 Breaststroke LCM 1:28.99 BB+5.70s to A·+14.80s to Sectionals 2026-05-17 2026 ST TXLA 11&O End of School Splash venue
200 Breaststroke LCM 3:28.46 B+10.37s to BB·+44.07s to Sectionals 2025-05-04 2025 ST 22nd Annual Cinco de Mayo venue
50 Butterfly LCM 31.64 AA+0.95s to AAA·+3.15s to Sectionals 2025-07-11 2025 ST AAAA STAGS LC Championship venue
100 Butterfly LCM 1:11.73 A+2.64s to AA·+10.14s to Sectionals 2026-04-26 2026 ST TXLA 11&O Long Course Kick Off venue
200 Butterfly LCM 3:15.13 +6.24s to B·+54.94s to Sectionals 2025-05-04 2025 ST 22nd Annual Cinco de Mayo venue
200 Individual Medley LCM 2:40.49 A+4.10s to AA·+19.30s to Sectionals 2026-05-17 2026 ST TXLA 11&O End of School Splash venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 13.

National cuts (Sectionals → Nationals) are the current-season meet qualifying times for the swimmer's zone and age group; ✓ marks the hardest cut already achieved.

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

LegCourseTime StartRelayDateMeet
50 Freestyle SCY 31.99 flat 200 Free Relay 2024-02-03 2024 ST STX Championship - Belton
50 Freestyle SCY 25.77 flying 200 Free Relay (leg 2) 2026-02-20 2026 ST AAAA SC STAGS
50 Butterfly SCY 1:56.51 flying 200 Medley Relay (leg 3) 2024-02-04 2024 ST STX Championship - Belton
50 Freestyle LCM 29.62 flying 200 Free Relay (leg 2) 2025-07-20 2025 Texas Age Group Championships
100 Freestyle LCM 1:03.59 flying 400 Free Relay (leg 2) 2026-07-12 2026 ST NIST LC STAGS

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

3387 points (6/6 events)

EventTime Points
500 FR SCY 5:47.72 575
200 BK SCY 2:17.26 603
200 BR SCY 3:01.11 380
200 FL SCY 2:19.75 595
200 IM SCY 2:18.55 625
400 IM SCY 4:58.77 609

IMR 13-14 · LCM

3253 points (5/5 events)

EventTime Points
200 FR LCM 2:15.88 741
100 BK LCM 1:07.53 803
100 BR LCM 1:28.99 492
100 FL LCM 1:11.73 593
200 IM LCM 2:40.49 624

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

PR splits

100 Freestyle SCY 56.79

27.69
29.10

Front half 27.69s · back half 29.10s

200 Freestyle SCY 2:02.66

28.49
31.88
31.79
30.50

Front half 60.37s · back half 62.29s

500 Freestyle SCY 5:47.72

31.70
34.75
35.66
35.56
35.25
35.16
35.55
35.39
35.34
33.36

Front half 172.92s · back half 174.80s

100 Backstroke SCY 1:02.44

30.92
31.52

Front half 30.92s · back half 31.52s

200 Backstroke SCY 2:17.26

32.34
35.12
35.36
34.44

Front half 67.46s · back half 69.80s

100 Breaststroke SCY 1:21.24

38.90
42.34

Front half 38.90s · back half 42.34s

200 Breaststroke SCY 3:01.11

42.60
47.32
46.50
44.69

Front half 89.92s · back half 91.19s

100 Butterfly SCY 1:02.86

29.97
32.89

Front half 29.97s · back half 32.89s

200 Butterfly SCY 2:19.75

31.69
34.42
36.61
37.03

Front half 66.11s · back half 73.64s

100 Individual Medley SCY 1:04.32

30.11
34.21

Front half 30.11s · back half 34.21s

200 Individual Medley SCY 2:18.55

30.72
35.36
42.32
30.15

Front half 66.08s · back half 72.47s

400 Individual Medley SCY 4:58.77

31.68
36.64
38.14
36.54
44.38
44.65
34.20
32.54

Front half 143.00s · back half 155.77s

200 Freestyle LCM 2:15.88

67.00
68.88

Front half 67.00s · back half 68.88s

400 Freestyle LCM 5:03.25

34.17
37.84
38.84
38.74
38.50
38.95
38.62
37.59

Front half 149.59s · back half 153.66s

200 Backstroke LCM 2:25.99

34.40
37.31
37.56
36.72

Front half 71.71s · back half 74.28s

200 Breaststroke LCM 3:28.46

48.65
53.60
54.18
52.03

Front half 102.25s · back half 106.21s

200 Butterfly LCM 3:15.13

44.18
53.30
50.70
46.95

Front half 97.48s · back half 97.65s

200 Individual Medley LCM 2:40.49

74.91
85.58

Front half 74.91s · back half 85.58s

Reaction time

fastest 0.74s average 0.745s slowest 0.75s 2 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 26.08 11 swims
100 Freestyle SCY 56.79 9 swims
200 Freestyle SCY 2:02.66 7 swims
500 Freestyle SCY 5:47.72 7 swims
50 Backstroke SCY 29.10 14 swims
100 Backstroke SCY 1:02.44 13 swims
200 Backstroke SCY 2:17.26 7 swims
50 Breaststroke SCY 36.03 10 swims
100 Breaststroke SCY 1:21.24 8 swims
200 Breaststroke SCY 3:01.11 2 swims
50 Butterfly SCY 27.75 20 swims
100 Butterfly SCY 1:02.86 13 swims
200 Butterfly SCY 2:19.75 7 swims
100 Individual Medley SCY 1:04.32 9 swims
200 Individual Medley SCY 2:18.55 14 swims
400 Individual Medley SCY 4:58.77 1 swim
50 Freestyle LCM 28.54 13 swims
100 Freestyle LCM 1:04.07 6 swims
200 Freestyle LCM 2:15.88 5 swims
400 Freestyle LCM 5:03.25 4 swims
50 Backstroke LCM 31.85 14 swims
100 Backstroke LCM 1:07.53 12 swims
200 Backstroke LCM 2:25.99 11 swims
50 Breaststroke LCM 45.59 3 swims
100 Breaststroke LCM 1:28.99 6 swims
200 Breaststroke LCM 3:28.46 1 swim
50 Butterfly LCM 31.64 11 swims
100 Butterfly LCM 1:11.73 8 swims
200 Butterfly LCM 3:15.13 1 swim
200 Individual Medley LCM 2:40.49 5 swims