Sierra Kobak
Personal records
| Event | Course | Best | Cut | Date | Meet |
|---|---|---|---|---|---|
| 25 Freestyle | SCY | 16.77 | 2017-02-19 | LESI 8 & Under Championships 2017slow pool | |
| 50 Freestyle | SCY | 25.63 | AA+0.64s to AAA·+0.34s to Sectionals | 2026-03-07 | 2026 OH Tim Myers SC Senior Champsvenue |
| 100 Freestyle | SCY | 58.13 | A+1.54s to AA·+3.64s to Sectionals | 2021-11-21 | The 2021 Mark J. Braun Fall Classicvenue |
| 200 Freestyle | SCY | 2:07.51 | A+5.22s to AA·+9.62s to Sectionals | 2021-11-06 | Kelly Kinney Memorial - Splash Out Cancervenue |
| 500 Freestyle | SCY | 6:17.92 | B+4.93s to BB·+62.93s to Sectionals | 2020-02-23 | Regional Champs 2020slow pool |
| 25 Backstroke | SCY | 24.23 | 2015-11-01 | Kelley Kinney Memorial - Splash Out Cancervenue | |
| 50 Backstroke | SCY | 28.04 | AA+0.35s to AAA·+0.75s to Sectionals | 2026-03-06 | 2026 OH Tim Myers SC Senior Champsvenue |
| 100 Backstroke | SCY | 1:00.52 | AA+2.03s to AAA·+0.03s to Sectionals | 2023-03-05 | LESI Senior Champs hosted by FASTfast pool |
| 200 Backstroke | SCY | 2:21.72 | BB+3.23s to A·+10.23s to Sectionals | 2021-12-04 | Shaker Shark Invitationalvenue |
| 25 Breaststroke | SCY | 21.94 | 2017-02-19 | LESI 8 & Under Championships 2017slow pool | |
| 50 Breaststroke | SCY | 31.10 | AAA+0.31s to AAAA·+0.41s to Sectionals | 2023-03-11 | 2023 Winter LE Age Group Championshipvenue |
| 100 Breaststroke | SCY | 1:06.85 | AAA+2.66s to AAAA·Sectionals ✓+1.36s to Futures | 2024-02-22 | 2024 OHIO STATE HIGH SCHOOL DIvenue |
| 200 Breaststroke | SCY | 2:22.75 | AAA+2.66s to AAAA·Sectionals ✓+0.06s to Futures | 2024-03-02 | 2024 Lake Erie Senior Champs Prelimsfast pool |
| 25 Butterfly | SCY | 21.30 | 2016-11-05 | Kelly Kinney Memorial - Splash Out Cancervenue | |
| 50 Butterfly | SCY | 27.26 | AAA+1.17s to AAAA·+0.57s to Sectionals | 2023-03-12 | 2023 Winter LE Age Group Championshipvenue |
| 100 Butterfly | SCY | 59.20 | AA+1.01s to AAA·Sectionals ✓+2.61s to Futures | 2024-11-23 | The 2024 Mark J. Braun Fall Classicvenue |
| 100 Individual Medley | SCY | 1:00.42 | 2026-03-06 | 2026 OH Tim Myers SC Senior Champsvenue | |
| 200 Individual Medley | SCY | 2:10.89 | AA+0.30s to AAA·Sectionals ✓+4.50s to Futures | 2024-02-22 | 2024 OHIO STATE HIGH SCHOOL DIvenue |
| 400 Individual Medley | SCY | 4:51.29 | A+0.40s to AA·+7.30s to Sectionals | 2023-03-10 | 2023 Winter LE Age Group Championshipvenue |
| 50 Freestyle | LCM | 28.78 | AA+0.39s to AAA·Sectionals ✓+1.39s to Futures | 2023-07-30 | 2023 LE Summer SENIOR Champsvenue |
| 100 Freestyle | LCM | 1:05.86 | A+1.57s to AA·+4.07s to Sectionals | 2022-07-24 | 2022 Lake Erie Summer JO & SR Championshipsvenue |
| 400 Freestyle | LCM | 5:05.83 | A+11.94s to AA·+23.44s to Sectionals | 2023-07-29 | 2023 LE Summer SENIOR Champsvenue |
| 50 Backstroke | LCM | 32.14 | AAA+1.05s to AAAA·+0.65s to Sectionals | 2022-07-23 | 2022 Lake Erie Summer JO & SR Championshipsvenue |
| 100 Backstroke | LCM | 1:09.14 | AA+0.75s to AAA·Sectionals ✓+2.35s to Futures | 2026-03-28 | 2026 Central Zone East Spring Speedo Sectionavenue |
| 50 Breaststroke | LCM | 35.59 | AAA+0.90s to AAAA·Sectionals ✓+0.80s to Futures | 2022-08-06 | 2025 Central Zone 14 & Under Championship Meeslow pool |
| 100 Breaststroke | LCM | 1:17.54 | AA+0.35s to AAA·Sectionals ✓+1.55s to Futures | 2025-03-29 | 2025 Central Zone East Spring Speedo Sectionavenue |
| 200 Breaststroke | LCM | 2:51.02 | AA+3.63s to AAA·Sectionals ✓+7.63s to Futures | 2024-03-21 | 2024 Spring Speedo Sectionalsvenue |
| 50 Butterfly | LCM | 31.85 | AA+1.26s to AAA·+1.56s to Sectionals | 2021-07-23 | 2021 LE Summer Junior Olympic Championshipsvenue |
| 100 Butterfly | LCM | 1:07.89 | AA+1.60s to AAA·Sectionals ✓+3.20s to Futures | 2025-03-28 | 2025 Central Zone East Spring Speedo Sectionavenue |
| 200 Individual Medley | LCM | 2:33.23 | AA+3.34s to AAA·+1.94s to Sectionals | 2024-06-14 | Holtrey Summer Classicvenue |
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
| Leg | Course | Time | Start | Relay | Date | Meet |
|---|---|---|---|---|---|---|
| 50 Freestyle | SCY | 26.24 | flat | 200 Free Relay | 2022-03-11 | 2022 Lake Erie SC Winter JO and 8U Champs |
| 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 | 55.49 | flying | 400 Free Relay (leg 2) | 2025-03-01 | 2025 OH Tim Myers Memorial SC Senior Champs |
| 50 Backstroke | SCY | 29.23 | flat | 200 Medley Relay | 2024-03-03 | 2024 Lake Erie Senior Champs Prelims |
| 100 Backstroke | SCY | 1:01.09 | flat | 400 Medley Relay | 2024-03-02 | 2024 Lake Erie Senior Champs Prelims |
| 50 Breaststroke | SCY | 30.37 | flying | 200 Medley Relay (leg 2) | 2024-02-23 | 2024 OHIO STATE HIGH SCHOOL DI |
| 100 Breaststroke | SCY | 1:08.60 | flying | 400 Medley Relay (leg 2) | 2025-02-28 | 2025 OH Tim Myers Memorial SC Senior Champs |
| 50 Butterfly | SCY | 27.32 | flying | 200 Medley Relay (leg 3) | 2022-03-11 | 2022 Lake Erie SC Winter JO and 8U Champs |
| 100 Butterfly | SCY | 1:04.38 | flying | 400 Medley Relay (leg 3) | 2022-03-13 | 2022 Lake Erie SC Winter JO and 8U Champs |
| 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 Backstroke | LCM | 32.83 | flat | 200 Medley Relay | 2022-08-05 | 2025 Central Zone 14 & Under Championship Mee |
| 100 Breaststroke | LCM | 1:21.37 | flying | 400 Medley Relay (leg 2) | 2022-08-06 | 2025 Central Zone 14 & Under Championship Mee |
| 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
200 Freestyle SCY 2:07.51
Front half 62.33s · back half 65.18s
500 Freestyle SCY 6:17.92
Front half 183.44s · back half 194.48s
100 Backstroke SCY 1:00.52
Front half 29.18s · back half 31.34s
200 Backstroke SCY 2:21.72
Front half 68.54s · back half 73.18s
100 Breaststroke SCY 1:06.85
Front half 31.16s · back half 35.69s
200 Breaststroke SCY 2:22.75
Front half 68.22s · back half 74.53s
100 Butterfly SCY 59.20
Front half 27.81s · back half 31.39s
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
400 Individual Medley SCY 4:51.29
Front half 138.56s · back half 152.73s
100 Freestyle LCM 1:05.86
Front half 31.44s · back half 34.42s
400 Freestyle LCM 5:05.83
Front half 148.10s · back half 157.73s
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
Swim history
Every recorded swim, newest first
| Date | Event | Course | Time | Age | Round | Meet |
|---|
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.