swimMauricio Guillen
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 50 Freestyle | SCY | 23.43 | 2026-01-21 | 2026 BD UIL2-5A Championship fast pool | |
| 100 Freestyle | SCY | 54.72 | 2024-03-02 | 2024 BD- SCY Championship venue | |
| 200 Freestyle | SCY | 2:07.38 | 2024-03-03 | 2024 BD- SCY Championship venue | |
| 500 Freestyle | SCY | 5:59.56 | 2024-12-20 | 2024 BD EPAP Leo Cancellare Invitational venue | |
| 50 Backstroke | SCY | 37.96 | 2022-10-22 | 2022 BD SWAToberfest Sprintacular | |
| 100 Backstroke | SCY | 1:03.12 | 2023-12-09 | 2023 BD EPAP Leo Cancellarie Invitational venue | |
| 200 Backstroke | SCY | 2:25.21 | 2024-02-18 | 2024 BD BLST Arctic BLAST Swim Meet venue | |
| 50 Breaststroke | SCY | 44.52 | 2022-10-22 | 2022 BD SWAToberfest Sprintacular | |
| 100 Breaststroke | SCY | 1:21.69 | 2023-12-09 | 2023 BD EPAP Leo Cancellarie Invitational venue | |
| 200 Breaststroke | SCY | 3:01.55 | 2024-02-18 | 2024 BD BLST Arctic BLAST Swim Meet venue | |
| 50 Butterfly | SCY | 26.36 | 2024-10-19 | 2024 BD SWAToberfest Sprintacular venue | |
| 100 Butterfly | SCY | 57.81 | 2024-11-23 | 2024 BD UIL EPISD Invite venue | |
| 200 Butterfly | SCY | 2:21.45 | 2024-02-17 | 2024 BD BLST Arctic BLAST Swim Meet venue | |
| 100 Individual Medley | SCY | 1:06.02 | 2024-10-19 | 2024 BD SWAToberfest Sprintacular venue | |
| 200 Individual Medley | SCY | 2:23.32 | 2024-03-02 | 2024 BD- SCY Championship venue | |
| 400 Individual Medley | SCY | 5:24.89 | 2023-12-08 | 2023 BD EPAP Leo Cancellarie Invitational venue | |
| 50 Freestyle | LCM | 27.81 | 2024-07-21 | 2024 BD LCM Border Champs fast pool | |
| 100 Freestyle | LCM | 1:03.12 | 2024-06-28 | 2024 EPAP Jack White Classic venue | |
| 200 Freestyle | LCM | 2:25.82 | 2024-06-29 | 2024 EPAP Jack White Classic venue | |
| 400 Freestyle | LCM | 6:47.49 | 2022-05-22 | 2022 BD BLST Summer BLAST Swim Meet venue | |
| 50 Backstroke | LCM | 40.03 | 2022-07-23 | 2022 BD LCM Border Champs venue | |
| 100 Backstroke | LCM | 1:14.51 | 2024-06-30 | 2024 EPAP Jack White Classic venue | |
| 200 Backstroke | LCM | 2:50.29 | 2024-06-09 | 2024 BD Poppa's Day Invitational venue | |
| 50 Breaststroke | LCM | 55.44 | 2022-06-05 | 2022 BD SWAT Schools Out Summer Bash slow pool | |
| 100 Breaststroke | LCM | 1:35.28 | 2024-06-29 | 2024 EPAP Jack White Classic venue | |
| 200 Breaststroke | LCM | 4:46.25 | 2022-06-03 | 2022 BD SWAT Schools Out Summer Bash | |
| 50 Butterfly | LCM | 29.86 | 2025-06-28 | Jack White Memorial Swim Meet fast pool | |
| 100 Butterfly | LCM | 1:08.74 | 2024-06-29 | 2024 EPAP Jack White Classic venue | |
| 200 Butterfly | LCM | 3:49.06 | 2022-06-03 | 2022 BD SWAT Schools Out Summer Bash | |
| 200 Individual Medley | LCM | 2:48.96 | 2024-07-27 | 2024 WT Southern Zone Age Group Championship venue | |
| 400 Individual Medley | LCM | 6:38.26 | 2023-07-21 | 2023 BD LCM Border Champs venue |
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 | 23.90 | flying | 200 Free Relay (leg 4) | 2024-11-09 | 2024 Loretto Cathedral Invite |
| 50 Freestyle | SCY | 27.92 | flying | 200 Medley Relay (leg 4) | 2024-11-23 | 2024 BD UIL EPISD Invite |
| 100 Freestyle | SCY | 53.38 | flying | 400 Free Relay (leg 3) | 2024-11-23 | 2024 BD UIL EPISD Invite |
| 50 Butterfly | SCY | 25.25 | flying | 200 Medley Relay (leg 3) | 2024-11-09 | 2024 Loretto Cathedral Invite |
| 100 Butterfly | SCY | 1:03.11 | flying | 400 Medley Relay (leg 3) | 2024-02-17 | 2024 BD BLST Arctic BLAST Swim Meet |
| 50 Freestyle | LCM | 27.40 | flying | 200 Medley Relay (leg 4) | 2024-07-26 | 2024 WT Southern Zone Age Group Championship |
| 50 Freestyle | LCM | 28.05 | flying | 200 Free Relay (leg 2) | 2024-06-09 | 2024 BD Poppa's Day Invitational |
| 100 Freestyle | LCM | 1:02.63 | flat | 400 Free Relay | 2024-07-24 | 2024 WT Southern Zone Age Group Championship |
| 50 Butterfly | LCM | 42.36 | flying | 200 Medley Relay (leg 3) | 2022-07-23 | 2022 BD LCM Border Champs |
| 100 Butterfly | LCM | 1:11.27 | flying | 400 Medley Relay (leg 3) | 2024-06-29 | 2024 EPAP Jack White 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.
PR splits
500 Freestyle SCY 5:59.56
Front half 171.80s · back half 187.76s
100 Backstroke SCY 1:03.12 RT 0.68s
Front half 30.39s · back half 32.73s
200 Backstroke SCY 2:25.21 RT 0.66s
100 Breaststroke SCY 1:21.69 RT 0.73s
Front half 38.75s · back half 42.94s
200 Breaststroke SCY 3:01.55 RT 0.69s
Front half 85.36s · back half 96.19s
100 Butterfly SCY 57.81
Front half 26.59s · back half 31.22s
200 Butterfly SCY 2:21.45
Front half 64.38s · back half 77.07s
100 Individual Medley SCY 1:06.02
Front half 30.57s · back half 35.45s
400 Individual Medley SCY 5:24.89 RT 0.69s
Front half 146.44s · back half 178.45s
100 Freestyle LCM 1:03.12
Front half 29.85s · back half 33.27s
200 Freestyle LCM 2:25.82 RT 0.73s
Front half 69.27s · back half 76.55s
400 Freestyle LCM 6:47.49
100 Backstroke LCM 1:14.51 RT 0.78s
Front half 35.75s · back half 38.76s
200 Backstroke LCM 2:50.29
Front half 81.28s · back half 89.01s
100 Breaststroke LCM 1:35.28
Front half 45.67s · back half 49.61s
100 Butterfly LCM 1:08.74 RT 0.71s
Front half 32.27s · back half 36.47s
200 Butterfly LCM 3:49.06 split/total mismatch
200 Individual Medley LCM 2:48.96
Front half 75.51s · back half 93.45s
400 Individual Medley LCM 6:38.26 RT 0.76s
Front half 180.78s · back half 217.48s
Reaction time
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.