Sierra Kobak
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 16.77 | 2017-02-19 | LESI 8 & Under Championships 2017 slow pool | |
| 50 Freestyle | SCY | 25.63 | AA+0.64s to AAA | 2026-03-07 | 2026 OH Tim Myers SC Senior Champs fast pool |
| 100 Freestyle | SCY | 58.13 | A+1.54s to AA | 2021-11-21 | The 2021 Mark J. Braun Fall Classic venue |
| 200 Freestyle | SCY | 2:07.51 | A+5.22s to AA | 2021-11-06 | Kelly Kinney Memorial - Splash Out Cancer |
| 500 Freestyle | SCY | 6:17.92 | B+4.93s to BB | 2020-02-23 | Regional Champs 2020 venue |
| 25 Backstroke | SCY | 24.23 | 2015-11-01 | Kelley Kinney Memorial - Splash Out Cancer venue | |
| 50 Backstroke | SCY | 28.04 | AA+0.35s to AAA | 2026-03-06 | 2026 OH Tim Myers SC Senior Champs fast pool |
| 100 Backstroke | SCY | 1:00.52 | AA+2.03s to AAA | 2023-03-03 | LESI Senior Champs hosted by FAST |
| 200 Backstroke | SCY | 2:21.72 | BB+3.23s to A | 2021-12-03 | Shaker Shark Invitational |
| 25 Breaststroke | SCY | 21.94 | 2017-02-19 | LESI 8 & Under Championships 2017 slow pool | |
| 50 Breaststroke | SCY | 31.10 | AAA+0.31s to AAAA | 2023-03-11 | 2023 Winter LE Age Group Championship venue |
| 100 Breaststroke | SCY | 1:06.85 | AAA+2.66s to AAAA | 2024-02-22 | 2024 OHIO STATE HIGH SCHOOL DI fast pool |
| 200 Breaststroke | SCY | 2:22.75 | AAA+2.66s to AAAA | 2024-03-01 | 2024 Lake Erie Senior Champs Prelims |
| 25 Butterfly | SCY | 21.30 | 2016-11-05 | Kelly Kinney Memorial - Splash Out Cancer venue | |
| 50 Butterfly | SCY | 27.26 | AAA+1.17s to AAAA | 2023-03-10 | 2023 Winter LE Age Group Championship |
| 100 Butterfly | SCY | 59.20 | AA+1.01s to AAA | 2021-11-21 | The Mark J. Braun Fall Classic 2022 venue |
| 100 Individual Medley | SCY | 1:00.42 | 2026-03-06 | 2026 OH Tim Myers SC Senior Champs fast pool | |
| 200 Individual Medley | SCY | 2:10.89 | AA+0.30s to AAA | 2024-02-22 | 2024 OHIO STATE HIGH SCHOOL DI fast pool |
| 400 Individual Medley | SCY | 4:51.29 | A+0.40s to AA | 2023-03-10 | 2023 Winter LE Age Group Championship |
| 50 Freestyle | LCM | 28.78 | AA+0.39s to AAA | 2023-07-30 | 2023 LE Summer SENIOR Champs venue |
| 100 Freestyle | LCM | 1:05.86 | A+1.57s to AA | 2022-07-21 | 2022 Lake Erie Summer JO & SR Championships |
| 400 Freestyle | LCM | 5:05.83 | A+11.94s to AA | 2023-07-28 | 2023 LE Summer SENIOR Champs |
| 50 Backstroke | LCM | 32.14 | AAA+1.05s to AAAA | 2022-07-23 | 2022 Lake Erie Summer JO & SR Championships venue |
| 100 Backstroke | LCM | 1:09.14 | AA+0.75s to AAA | 2026-03-28 | 2026 Central Zone East Spring Speedo Sectiona venue |
| 50 Breaststroke | LCM | 35.99 | AAA+1.30s to AAAA | 2024-07-21 | 2024OH CZ East Speedo Sectionals fast pool |
| 100 Breaststroke | LCM | 1:17.54 | AA+0.35s to AAA | 2025-03-29 | 2025 Central Zone East Spring Speedo Sectiona venue |
| 200 Breaststroke | LCM | 2:51.02 | AA+3.63s to AAA | 2024-03-21 | 2024 Spring Speedo Sectionals venue |
| 50 Butterfly | LCM | 31.85 | AA+1.26s to AAA | 2021-07-23 | 2021 LE Summer Junior Olympic Championships |
| 100 Butterfly | LCM | 1:07.89 | AA+1.60s to AAA | 2025-03-28 | 2025 Central Zone East Spring Speedo Sectiona venue |
| 200 Individual Medley | LCM | 2:33.23 | AA+3.34s to AAA | 2024-06-14 | Holtrey Summer Classic 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 Freestyle | SCY | 25.73 | flying | 200 Free Relay (leg 4) | 2024-02-11 | 2024 Lakewood Sectional Championship |
| 50 Freestyle | SCY | 28.44 | flying | 200 Medley Relay (leg 4) | 2020-03-01 | Lake Erie Junior Olympic Championship Meet |
| 100 Freestyle | SCY | 58.08 | flying | 400 Free Relay (leg 4) | 2023-03-11 | 2023 Winter LE Age Group Championship |
| 100 Backstroke | SCY | 1:03.55 | flat | 400 Medley Relay | 2023-03-12 | 2023 Winter LE Age Group Championship |
| 50 Breaststroke | SCY | 30.37 | flying | 200 Medley Relay (leg 2) | 2024-02-23 | 2024 OHIO STATE HIGH SCHOOL DI |
| 100 Breaststroke | SCY | 1:08.87 | flying | 400 Medley Relay (leg 2) | 2026-03-06 | 2026 OH Tim Myers SC Senior Champs |
| 50 Butterfly | SCY | 27.85 | flying | 200 Medley Relay (leg 3) | 2023-03-10 | 2023 Winter LE Age Group Championship |
| 50 Freestyle | LCM | 30.60 | flat | 200 Free Relay | 2021-07-25 | 2021 LE Summer Junior Olympic Championships |
| 50 Freestyle | LCM | 35.75 | flying | 200 Medley Relay (leg 4) | 2019-07-21 | 2019 Lake Erie LC Age Group Championship Meet |
| 50 Freestyle | LCM | 28.90 | flying | 200 Free Relay (leg 3) | 2025-03-29 | 2025 Central Zone East Spring Speedo Sectiona |
| 100 Freestyle | LCM | 1:06.08 | flat | 400 Free Relay | 2021-07-23 | 2021 LE Summer Junior Olympic Championships |
| 100 Freestyle | LCM | 1:03.92 | flying | 400 Medley Relay (leg 4) | 2022-07-17 | 2022 Speedo Summer Sectionals |
| 100 Freestyle | LCM | 1:03.51 | flying | 400 Free Relay (leg 2) | 2025-03-28 | 2025 Central Zone East Spring Speedo Sectiona |
| 50 Butterfly | LCM | 30.27 | flying | 200 Medley Relay (leg 3) | 2025-03-28 | 2025 Central Zone East Spring Speedo Sectiona |
| 100 Butterfly | LCM | 1:09.87 | flying | 400 Medley Relay (leg 3) | 2023-07-16 | 2023 OH CZ East Speedo Sectionals |
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
3551 points (5/6 events — incomplete)
| Event | Time | Points |
|---|---|---|
| 500 FR SCY | 6:17.92 | 487 |
| 200 BK SCY | 2:21.72 | 593 |
| 200 BR SCY | 2:22.75 | 913 |
| 200 IM SCY | 2:10.89 | 823 |
| 400 IM SCY | 4:51.29 | 735 |
| 200 FL SCY | — | 0 |
IMR 17-18 · SCY
3891 points (5/5 events)
| Event | Time | Points |
|---|---|---|
| 200 FR SCY | 2:07.51 | 648 |
| 100 BK SCY | 1:00.52 | 750 |
| 100 BR SCY | 1:06.85 | 860 |
| 100 FL SCY | 59.20 | 810 |
| 200 IM SCY | 2:10.89 | 823 |
Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.
PR splits
100 Freestyle SCY 58.13
Front half 28.00s · back half 30.13s
500 Freestyle SCY 6:17.92
Front half 183.44s · back half 194.48s
100 Breaststroke SCY 1:06.85
Front half 31.16s · back half 35.69s
100 Individual Medley SCY 1:00.42
Front half 27.71s · back half 32.71s
200 Individual Medley SCY 2:10.89
Front half 61.11s · back half 69.78s
100 Backstroke LCM 1:09.14
Front half 33.59s · back half 35.55s
100 Breaststroke LCM 1:17.54
Front half 36.22s · back half 41.32s
200 Breaststroke LCM 2:51.02
Front half 79.68s · back half 91.34s
100 Butterfly LCM 1:07.89
Front half 31.65s · back half 36.24s
200 Individual Medley LCM 2:33.23
Front half 71.47s · back half 81.76s
Progression
Faster times are higher. One card per event, all courses & history.