Western Zone Zone Boys 10 & under - 50 Y Back
These rankings show the swimmers' placement within their Zone.They are based on the swimmer's personal best, their current age category, and team; and are calculated from all the meets results.
For each swimmer, you can find the swimmer's ranking, their best time, the corresponding time standard, as well as how much faster the swimmer needs to be to reach the next level. The last columns provide information about the event they achieved this personal best.
Swimmer Rankings
| Ranking | Name | Time | Age | Standard | to Next Standard | Team | Date | Meet | |
|---|---|---|---|---|---|---|---|---|---|
| 1301 | Calder Pettersen | 47.57 | 9 | B Min | BB: 42.89 (+4.68s | 9.8%) | Cascade Swim Club | 10/12/2024 | 2024 PN CSC Fall Classic Invitational | |
| 1302 | Santiago Westbury | 47.57 | 10 | B Min | BB: 42.89 (+4.68s | 9.8%) | Piedmont Swim Team | 03/28/2026 | Piedmont Swim Team C B BB+ | |
| 1303 | Kirk Li | 47.58 | 8 | B Min | BB: 42.89 (+4.69s | 9.9%) | Pacific Dragons Swim Team | 01/24/2026 | 2026 PN PDST Winter Invitational Meet Approv | |
| 1304 | John Knudsen | 47.58 | 10 | B Min | BB: 42.89 (+4.69s | 9.9%) | Puget Sound Swim Club | 01/31/2026 | 2026 PN BISC Bluefin Invitational | |
| 1305 | Ryan Li | 47.59 | 9 | B Min | BB: 42.89 (+4.70s | 9.9%) | Seattle Metropolitan Aquatic C | 02/27/2026 | 2026 PN February AGI, Div 1 Approved | |
| 1306 | Sam Zhang | 47.60 | 8 | B Min | BB: 42.89 (+4.71s | 9.9%) | Otter Swim Club | 03/28/2026 | LAMV C B A+ Meet | |
| 1307 | Andrew Simon-O'Neill | 47.60 | 10 | B Min | BB: 42.89 (+4.71s | 9.9%) | Oakland Undercurrent Swim Team | 04/18/2026 | RP SWIM CLUB (PRNA) SPRING SWIM FEST! | |
| 1308 | Wyatt Hellickson | 47.60 | 10 | B Min | BB: 42.89 (+4.71s | 9.9%) | Life Time Oregon Swim Team | 03/14/2026 | 2026 John Haring Memorial BC Showdown | |
| 1309 | Jack Mistrot | 47.63 | 9 | B Min | BB: 42.89 (+4.74s | 10.0%) | West Coast Aquatics | 05/15/2026 | 2026 PN SRST Pacific Coast Invitational App | |
| 1310 | Aryash Suri | 47.63 | 8 | B Min | BB: 42.89 (+4.74s | 10.0%) | Seattle Metropolitan Aquatic C | 03/28/2026 | 2026 PN Spring Showdown, Div 2 Approved | |
| 1311 | Daschel Trowbridge | 47.63 | 10 | B Min | BB: 42.89 (+4.74s | 10.0%) | Roseburg Y Swim Team | 10/18/2025 | 2025 Tri Y | |
| 1312 | James King | 47.63 | 9 | B Min | BB: 42.89 (+4.74s | 10.0%) | The Olympic Club | 07/10/2026 | Redwood Empire Swim League Championship | |
| 1313 | Allan Fox | 47.65 | 10 | B Min | BB: 42.89 (+4.76s | 10.0%) | Hillsboro Swim Team | 02/07/2026 | 2026 OR HEAT BC Blastoff | |
| 1314 | Carson Kocher | 47.65 | 9 | B Min | BB: 42.89 (+4.76s | 10.0%) | SlipStream Aquatics | 02/13/2026 | 2026 CO NJ Groundhog Invite | |
| 1315 | Asher Manning | 47.66 | 8 | B Min | BB: 42.89 (+4.77s | 10.0%) | Aces Swim Club | 01/23/2026 | 2026 CO TOPS Colorado Open | |
| 1316 | Mason Cotter | 47.66 | 10 | B Min | BB: 42.89 (+4.77s | 10.0%) | Bellingham Bay Swim Team | 05/15/2026 | 2026 PN TAC Spring Thunderbird Approved | |
| 1317 | Ethan Wang | 47.67 | 10 | B Min | BB: 42.89 (+4.78s | 10.0%) | Machine Aquatics | 02/20/2026 | 2026 Machine Qualifier | |
| 1318 | Parker Allen | 47.67 | 10 | B Min | BB: 42.89 (+4.78s | 10.0%) | Wasatch Swim Club | 11/01/2025 | Race Swami Dia De Los Muertos Classic 2025 | |
| 1319 | Keegan Hardy | 47.68 | 8 | B Min | BB: 42.89 (+4.79s | 10.0%) | VillaSport Swim Team | 01/18/2025 | 2025 LSST January Frosty Meet | |
| 1320 | Theo Mello | 47.68 | 7 | B Min | BB: 42.89 (+4.79s | 10.0%) | Excel Aquatics | 01/16/2026 | 2026 TYR Mardi Gras Invite | |
| 1321 | Kunal Agarwal | 47.69 | 10 | B Min | BB: 42.89 (+4.80s | 10.1%) | California Dolphins Swim Team | 11/14/2025 | 2025 Santa Clara Swim Club SC CBA Meet | |
| 1322 | Joseph McEttrick | 47.71 | 10 | B Min | BB: 42.89 (+4.82s | 10.1%) | Pacific Swim | 06/13/2026 | 2026 SI ICAC 14U RISING STARS 2 | |
| 1323 | Sullivan Chen | 47.72 | 9 | B Min | BB: 42.89 (+4.83s | 10.1%) | California Dolphins Swim Team | 07/25/2026 | Zone 2 Summer Championships | |
| 1324 | Colin Hunger | 47.72 | 9 | B Min | BB: 42.89 (+4.83s | 10.1%) | Piranha Swimming | 12/13/2025 | SDAT Winter Pentathlon | |
| 1325 | Grant Soder | 47.72 | 10 | B Min | BB: 42.89 (+4.83s | 10.1%) | Roseburg Y Swim Team | 07/18/2026 | RYST Summer Open 2026 | |
| 1326 | Conner Yang | 47.72 | 10 | B Min | BB: 42.89 (+4.83s | 10.1%) | The Dolphins Portland Swimming | 01/11/2025 | 2025 HRVST Winter Invitational | |
| 1327 | Andrew Hitt | 47.73 | 10 | B Min | BB: 42.89 (+4.84s | 10.1%) | Life Time Oregon Swim Team | 02/07/2026 | 2026 OR HEAT BC Blastoff | |
| 1328 | Adam Osman | 47.73 | 8 | B Min | BB: 42.89 (+4.84s | 10.1%) | Dart Swimming | 07/25/2026 | 2026 REAL Championships | |
| 1329 | Rhys Brenner | 47.75 | 9 | B Min | BB: 42.89 (+4.86s | 10.2%) | COSA Swimming | 03/14/2026 | 2026 CO Zone 5 Championships | |
| 1330 | Edward Cadwallader | 47.76 | 9 | B Min | BB: 42.89 (+4.87s | 10.2%) | North Whidbey Aquatic Club | 05/15/2026 | 2026 PN SRST Pacific Coast Invitational App | |
| 1331 | Calvin Dell | 47.77 | 9 | B Min | BB: 42.89 (+4.88s | 10.2%) | San Benito Aquatics | 07/24/2026 | CVAL 2026 | |
| 1332 | David Tan | 47.77 | 9 | B Min | BB: 42.89 (+4.88s | 10.2%) | Pacifica Sea Lions | 12/06/2025 | DCD Winter Holiday Splash CBA+ | |
| 1333 | Bodhi Barefoot | 47.79 | 10 | B Min | BB: 42.89 (+4.90s | 10.3%) | Mendocino Coast Sea Dragons | 11/22/2025 | Thankswimming Classic 2025 | |
| 1334 | Arthur Viray | 47.79 | 9 | B Min | BB: 42.89 (+4.90s | 10.3%) | Daly City Dolphins | 03/28/2026 | PSL March CBA+ | |
| 1335 | Henry Huang | 47.79 | 9 | B Min | BB: 42.89 (+4.90s | 10.3%) | Daly City Dolphins | 02/07/2026 | 2026 PSL Super Finals Invitational | |
| 1336 | Cates Cunningham | 47.80 | 10 | B Min | BB: 42.89 (+4.91s | 10.3%) | Excel Aquatics | 01/16/2026 | 2026 TYR Mardi Gras Invite | |
| 1337 | Marko Tamburi | 47.80 | 10 | B Min | BB: 42.89 (+4.91s | 10.3%) | Star Aquatics | 11/15/2025 | 2025 John Dewey Invitational | |
| 1338 | Alexander Lemire | 47.80 | 10 | B Min | BB: 42.89 (+4.91s | 10.3%) | Blue Dolphin Swim Team | 01/11/2026 | 2026 NE ORO January Meet | |
| 1339 | Derek Feng | 47.81 | 10 | B Min | BB: 42.89 (+4.92s | 10.3%) | San Ramon Valley Aquatics | 03/22/2025 | 2025 3 22 CDST SC C B BB+ Meet | |
| 1340 | Aniyant Karthik | 47.81 | 9 | B Min | BB: 42.89 (+4.92s | 10.3%) | Olympic Cascade Aquatics | 03/28/2026 | 2026 PN Spring Showdown, Div1 Approved | |
| 1341 | Xander Exevea | 47.81 | 10 | B Min | BB: 42.89 (+4.92s | 10.3%) | South Bay Aquatics | 02/21/2026 | 2026 SI MRA Age Group Champs Max Meet | |
| 1342 | Tayvin Luangphasy | 47.82 | 10 | B Min | BB: 42.89 (+4.93s | 10.3%) | Adrienne C Nelson | 02/15/2025 | 2025 OR HS 6a 4 | |
| 1343 | Boone Day | 47.84 | 8 | B Min | BB: 42.89 (+4.95s | 10.3%) | Bend Swim Club | 02/04/2026 | 2026 Bend Swim Club Intersquad Challenger | |
| 1344 | Aaron Chai | 47.84 | 9 | B Min | BB: 42.89 (+4.95s | 10.3%) | Seattle Metropolitan Aquatic C | 04/25/2026 | 2026 PN SSCD Spring Open Approved | |
| 1345 | Callahan Ford | 47.86 | 9 | B Min | BB: 42.89 (+4.97s | 10.4%) | Evergreen Hurricanes | 01/31/2026 | 2026 CO Anthony Boettcher Nate Rothman Memori | |
| 1346 | Kai Miller | 47.86 | 10 | B Min | BB: 42.89 (+4.97s | 10.4%) | Boulder City Henderson Swim Te | 11/08/2024 | 2024 NV State Championships | |
| 1347 | William Oubre | 47.88 | 10 | B Min | BB: 42.89 (+4.99s | 10.4%) | Salida Cyclones | 06/19/2026 | 2026 Max Shirley Radiff Memorial | |
| 1348 | Nickoli Stachlowski | 47.88 | 10 | B Min | BB: 42.89 (+4.99s | 10.4%) | Hillsboro Swim Team | 01/16/2026 | 2026 THSC 14 U Winter Showcase | |
| 1349 | Simon Acuna Reyes | 47.90 | 9 | B Min | BB: 42.89 (+5.01s | 10.5%) | Life Time Oregon Swim Team | 05/16/2026 | 2026 John DeRoest Sextathlon Swim Meet | |
| 1350 | George Li | 47.91 | 8 | B Min | BB: 42.89 (+5.02s | 10.5%) | Bellevue Club Swim Team | 03/06/2026 | 2026 BBST Seize The Day Invitational | |
Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.