Derek Johnson

Mage 17BDGULASTSSAN

221 plausible swims · 38 meets · 2018-07-25 → 2026-11-07

Personal records

EventCourseBest CutDateMeet
50 Freestyle SCY 23.14 A+0.05s to AA·+0.85s to Sectionals 2026-01-02 2026 SSAN Winter Invite
100 Freestyle SCY 49.04 AA+0.75s to AAA·+0.75s to Sectionals 2026-01-16 TWST Speedo Winter Classicfast pool
200 Freestyle SCY 1:46.20 AAA+4.71s to AAAA·+0.41s to Sectionals 2026-03-05 LAC Spring Speedo Sectionals
500 Freestyle SCY 4:52.40 AA+3.81s to AAA·+6.31s to Sectionals 2025-12-04 2025 Southern Senior Championships
1000 Freestyle SCY 10:16.95 AA+12.46s to AAA·+19.76s to Sectionals 2025-12-04 2025 Southern Senior Championships
1650 Freestyle SCY 17:13.36 AA+23.57s to AAA·+24.67s to Sectionals 2025-03-02 2025 Gulf 13 & Over Champs (PEAK)venue
50 Backstroke SCY 26.92 BB+0.13s to A·+1.23s to Sectionals 2026-11-07 SSAN 2026 Fall Invite
100 Backstroke SCY 58.14 BB+0.85s to A·+3.05s to Sectionals 2026-01-02 2026 SSAN Winter Invite
200 Backstroke SCY 2:13.43 BB+8.24s to A·+11.14s to Sectionals 2024-02-04 2024 Fleet Mardi Gras Extravaganzavenue
50 Butterfly SCY 24.97 AA+0.48s to AAA·+0.68s to Sectionals 2026-03-05 LAC Spring Speedo Sectionals
100 Butterfly SCY 53.91 AA+1.92s to AAA·+1.22s to Sectionals 2026-03-05 LAC Spring Speedo Sectionals
200 Butterfly SCY 1:55.91 AAA+4.32s to AAAA·Sectionals ✓+2.22s to Futures 2025-12-04 2025 Southern Senior Championships
100 Individual Medley SCY 1:12.46 2020-03-06 2020 Short Course TAGS Championshipsvenue
200 Individual Medley SCY 2:08.87 BB+0.68s to A·+9.48s to Sectionals 2026-01-02 2026 SSAN Winter Invite
400 Individual Medley SCY 4:38.88 BB+2.89s to A·+26.89s to Sectionals 2025-01-03 2025 SSAN Winter Invitevenue
50 Freestyle LCM 26.39 AA+0.90s to AAA·+0.80s to Sectionals 2026-07-29 2026 Southern Zone Senior LC Championships
100 Freestyle LCM 56.76 AA+1.17s to AAA·+1.47s to Sectionals 2026-07-29 2026 Southern Zone Senior LC Championships
200 Freestyle LCM 2:04.74 AA+2.55s to AAA·+3.85s to Sectionals 2026-06-28 Texas Senior Circuit Meet IV 2026
400 Freestyle LCM 4:24.51 AA+3.92s to AAA·+5.42s to Sectionals 2025-01-01 Cypress Fairbanks Swim Club
800 Freestyle LCM 9:20.02 AA+18.53s to AAA·+24.43s to Sectionals 2026-07-09 2026 Gulf LC Senior Champsvenue
1500 Freestyle LCM 18:42.00 A+35.61s to AA·+87.81s to Sectionals 2024-07-14 2024 Long Course Gulf Age Group Championshipsvenue
50 Backstroke LCM 30.10 AA+0.71s to AAA·Sectionals ✓+2.21s to Futures 2026-06-12 2026 ST NIST George Block Invitationalvenue
100 Backstroke LCM 1:03.41 AA+1.52s to AAA·Sectionals ✓+2.82s to Futures 2026-07-29 2026 Southern Zone Senior LC Championships
200 Backstroke LCM 2:23.44 A+2.45s to AA·+2.75s to Sectionals 2026-07-10 2026 Gulf LC Senior Champsvenue
100 Breaststroke LCM 1:25.24 B+3.45s to BB·+12.85s to Sectionals 2025-01-01 Cypress Fairbanks Swim Club
200 Breaststroke LCM 3:06.11 B+7.62s to BB·+25.72s to Sectionals 2025-01-01 Cypress Fairbanks Swim Club
50 Butterfly LCM 27.96 AA+0.27s to AAA·+0.17s to Sectionals 2026-06-28 Texas Senior Circuit Meet IV 2026
100 Butterfly LCM 1:00.13 AA+0.44s to AAA·Sectionals ✓+2.14s to Futures 2026-07-29 2026 Southern Zone Senior LC Championships
200 Butterfly LCM 2:12.93 AAA+5.74s to AAAA·Sectionals ✓+2.74s to Futures 2026-07-29 2026 Southern Zone Senior LC Championships
200 Individual Medley LCM 2:30.34 BB+1.75s to A·+12.65s to Sectionals 2026-01-01 1712822
400 Individual Medley LCM 5:23.28 BB+4.29s to A·+29.39s to Sectionals 2026-05-15 2026 Fleet Summer Classic

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

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 29.36 flat 200 Free Relay 2020-03-07 2020 Short Course TAGS Championships
100 Freestyle SCY 55.81 flat 400 Free Relay 2024-03-01 2024 Texas Age Group Swimming Short Course Ch
50 Backstroke SCY 32.89 flat 200 Medley Relay 2020-03-08 2020 Short Course TAGS Championships
50 Butterfly SCY 26.51 flying 200 Medley Relay (leg 3) 2024-03-02 2024 Texas Age Group Swimming Short Course Ch
100 Butterfly SCY 58.75 flying 400 Medley Relay (leg 3) 2024-03-03 2024 Texas Age Group Swimming Short Course Ch
50 Freestyle LCM 25.82 flying 200 Free Relay (leg 2) 2026-07-10 2026 Gulf LC Senior Champs
200 Freestyle LCM 2:06.19 flying 800 Free Relay (leg 2) 2026-07-09 2026 Gulf LC Senior Champs
100 Butterfly LCM 50.25 flying 400 Medley Relay (leg 3) 2026-07-11 2026 Gulf LC Senior Champs

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 · LCM

4016 points (6/6 events)

EventTime Points
400 FR LCM 4:24.51 793
200 BK LCM 2:23.44 692
200 BR LCM 3:06.11 443
200 FL LCM 2:12.93 837
200 IM LCM 2:30.34 631
400 IM LCM 5:23.28 620

IMR 17-18 · LCM

3432 points (5/5 events)

EventTime Points
200 FR LCM 2:04.74 777
100 BK LCM 1:03.41 772
100 BR LCM 1:25.24 445
100 FL LCM 1:00.13 807
200 IM LCM 2:30.34 631

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

PR splits

100 Freestyle SCY 49.04 split/total mismatch

23.40
2.24

Front half 23.40s · back half 25.64s

200 Freestyle SCY 1:46.20 split/total mismatch

24.76
2.32
0.06
0.08

Front half 27.08s · back half 79.12s

1650 Freestyle SCY 17:13.36

27.99
30.60
30.96
31.36
30.91
31.17
31.43
31.19
31.32
31.19
31.05
31.37
31.45
31.27
31.43
31.59
31.63
32.09
31.84
31.58
32.18
32.26
32.32
32.49
32.05
32.09
32.54
31.94
30.74
31.28
31.43
29.71
28.91

200 Backstroke SCY 2:13.43

30.35
35.23
35.43
32.42

Front half 65.58s · back half 67.85s

100 Butterfly SCY 53.91 split/total mismatch

24.98
3.95

Front half 24.98s · back half 28.93s

100 Individual Medley SCY 1:12.46

32.37
40.09

Front half 32.37s · back half 40.09s

400 Individual Medley SCY 4:38.88

28.34
32.68
37.24
35.72
41.16
41.22
31.38
31.14

Front half 133.98s · back half 144.90s

400 Freestyle LCM 4:24.51 split/total mismatch

62.97
68.53

Front half 62.97s · back half 201.54s

800 Freestyle LCM 9:20.02

30.60
34.53
35.55
35.28
35.44
35.21
35.26
35.61
35.43
35.49
35.79
35.55
35.53
35.34
25.00
44.41

Front half 277.48s · back half 282.54s

1500 Freestyle LCM 18:42.00

69.07
74.79
74.63
75.53
75.32
74.97
76.35
75.49
76.32
76.03
75.64
75.42
75.16
75.28
72.00

200 Backstroke LCM 2:23.44

32.47
36.79
37.81
36.37

Front half 69.26s · back half 74.18s

200 Individual Medley LCM 2:30.34 split/total mismatch

70.24
9.86

Front half 70.24s · back half 80.10s

Reaction time

fastest 0.33s average 0.345s slowest 0.36s 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.

Swim history

Every recorded swim, newest first
DateEventCourse TimeAge RoundMeet

Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.

Progression

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

50 Freestyle SCY 23.14 16 swims
100 Freestyle SCY 49.04 14 swims
200 Freestyle SCY 1:46.20 12 swims
500 Freestyle SCY 4:52.40 11 swims
1000 Freestyle SCY 10:16.95 3 swims
1650 Freestyle SCY 17:13.36 3 swims
50 Backstroke SCY 26.92 3 swims
100 Backstroke SCY 58.14 8 swims
200 Backstroke SCY 2:13.43 4 swims
50 Butterfly SCY 24.97 5 swims
100 Butterfly SCY 53.91 16 swims
200 Butterfly SCY 1:55.91 17 swims
100 Individual Medley SCY 1:12.46 2 swims
200 Individual Medley SCY 2:08.87 3 swims
400 Individual Medley SCY 4:38.88 2 swims
50 Freestyle LCM 26.39 10 swims
100 Freestyle LCM 56.76 12 swims
200 Freestyle LCM 2:04.74 13 swims
400 Freestyle LCM 4:24.51 7 swims
800 Freestyle LCM 9:20.02 4 swims
1500 Freestyle LCM 18:42.00 1 swim
50 Backstroke LCM 30.10 4 swims
100 Backstroke LCM 1:03.41 10 swims
200 Backstroke LCM 2:23.44 5 swims
100 Breaststroke LCM 1:25.24 2 swims
200 Breaststroke LCM 3:06.11 1 swim
50 Butterfly LCM 27.96 6 swims
100 Butterfly LCM 1:00.13 11 swims
200 Butterfly LCM 2:12.93 12 swims
200 Individual Medley LCM 2:30.34 3 swims
400 Individual Medley LCM 5:23.28 1 swim