JR Achterhoff IV

Mage 12MIMYST

45 plausible swims · 9 meets · 2024-11-16 → 2026-03-08

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 30.64 B+0.15s to BB 2025-12-07 EGRA 2025 Winter Washout venue
100 Freestyle SCY 1:12.84 +1.35s to B 2026-02-21 2026 Michigan YMCA Clusters Championship venue
200 Freestyle SCY 2:34.09 B+9.20s to BB 2026-02-22 2026 Michigan YMCA Clusters Championship venue
500 Freestyle SCY 8:09.36 +69.47s to B 2024-12-06 EGRA 2024 Winter Washout venue
50 Backstroke SCY 39.53 +1.04s to B 2026-02-22 2026 Michigan YMCA Clusters Championship venue
100 Backstroke SCY 1:26.69 +4.50s to B 2025-12-07 EGRA 2025 Winter Washout venue
50 Breaststroke SCY 44.06 +0.57s to B 2025-12-06 EGRA 2025 Winter Washout venue
100 Breaststroke SCY 1:37.31 +4.72s to B 2026-02-22 2026 Michigan YMCA Clusters Championship venue
50 Butterfly SCY 52.70 +15.61s to B 2024-12-15 2024 Holiday Cup venue
100 Individual Medley SCY 1:29.76 +7.87s to B 2025-12-06 EGRA 2025 Winter Washout venue

Cuts are USA Swimming single-age motivational standards (B → AAAA) at age 12.

Fastest relay legs

LegCourseTime StartRelayDateMeet
50 Freestyle SCY 35.83 flat 200 Free Relay 2025-10-19 2025 WMS Boo Bash
50 Freestyle SCY 29.98 flying 200 Medley Relay (leg 4) 2024-12-08 EGRA 2024 Winter Washout
50 Freestyle SCY 31.46 flying 200 Free Relay (leg 2) 2026-03-07 2026 Michigan YMCA State Championship
50 Backstroke SCY 42.24 flat 200 Medley Relay 2024-11-16 2024 TYR Thanksgiving 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 11-12 · SCY

927 points (3/5 events — incomplete)

EventTime Points
500 FR SCY 8:09.36 266
100 BK SCY 1:26.69 323
100 BR SCY 1:37.31 338
100 FL SCY 0
200 IM SCY 0

IMR 11-12 · SCY

1608 points (5/5 events)

EventTime Points
200 FR SCY 2:34.09 437
50 BK SCY 39.53 362
50 BR SCY 44.06 365
50 FL SCY 52.70 129
100 IM SCY 1:29.76 315

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

PR splits

100 Freestyle SCY 1:12.84

34.44
38.40

Front half 34.44s · back half 38.40s

200 Freestyle SCY 2:34.09

34.29
41.07
41.13
37.60

Front half 75.36s · back half 78.73s

500 Freestyle SCY 8:09.36

42.43
50.06
49.43
49.60
50.37
52.38
49.84
48.88
49.96
46.41

Front half 241.89s · back half 247.47s

100 Backstroke SCY 1:26.69

40.94
45.75

Front half 40.94s · back half 45.75s

100 Breaststroke SCY 1:37.31

44.96
52.35

Front half 44.96s · back half 52.35s

100 Individual Medley SCY 1:29.76

43.30
46.46

Front half 43.30s · back half 46.46s

Progression

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

50 Freestyle SCY 30.64 9 swims
100 Freestyle SCY 1:12.84 5 swims
200 Freestyle SCY 2:34.09 9 swims
500 Freestyle SCY 8:09.36 1 swim
50 Backstroke SCY 39.53 4 swims
100 Backstroke SCY 1:26.69 2 swims
50 Breaststroke SCY 44.06 6 swims
100 Breaststroke SCY 1:37.31 5 swims
50 Butterfly SCY 52.70 2 swims
100 Individual Medley SCY 1:29.76 2 swims