USA Boys 10 & under - 50 Y Back
These rankings show the swimmers' placement within the United States.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 | |
|---|---|---|---|---|---|---|---|---|---|
| 4151 | Rutianyi Han | 44.30 | 9 | B Min | BB: 42.89 (+1.41s | 3.2%) | Saint Petersburg Aquatics | 01/23/2026 | BLOOMIN FAST SWIM MEET | |
| 4152 | John Dollar | 44.30 | 8 | B Min | BB: 42.89 (+1.41s | 3.2%) | Marshall County Swim Club | 01/16/2026 | 2026 HSA TYR Invitational | |
| 4153 | Andrew Hu | 44.31 | 10 | B Min | BB: 42.89 (+1.42s | 3.2%) | Nova of Virginia | 03/21/2026 | NOVA Short Course Send Off 2026 | |
| 4154 | Sam Yuan | 44.31 | 9 | B Min | BB: 42.89 (+1.42s | 3.2%) | Katy Aquatic Team For Youth | 01/18/2025 | 2025 LSST January Frosty Meet | |
| 4155 | Dimitrios Papavasiliou | 44.31 | 9 | B Min | BB: 42.89 (+1.42s | 3.2%) | Anglerfish Aquatics | 02/13/2026 | 2026 NE SAC TT 10 Under Champs | |
| 4156 | Elliott Rice | 44.31 | 9 | B Min | BB: 42.89 (+1.42s | 3.2%) | Birmingham \\\\\\'y\\\\\\' Blue Dolphins | 10/26/2025 | Lisa Ferris Fall Festival Time Trial 2025 | |
| 4157 | Samuel Ollestad | 44.31 | 8 | B Min | BB: 42.89 (+1.42s | 3.2%) | Lone Star Aquatic Club | 10/26/2025 | 2025 ST TXLA 10 U Fall Kick Off | |
| 4158 | Weston Wheeler | 44.31 | 10 | B Min | BB: 42.89 (+1.42s | 3.2%) | Waterloo Swimming | 01/17/2026 | 2026 ST AQTX B Champs North | |
| 4159 | Jack Tan | 44.31 | 10 | B Min | BB: 42.89 (+1.42s | 3.2%) | Texas Elite Swim Team | 11/09/2024 | 2024 LSST November Open Meet | |
| 4160 | Jude Stone | 44.32 | 9 | B Min | BB: 42.89 (+1.43s | 3.2%) | Front Range Barracudas | 01/16/2026 | 2026 CO CUDA Classic | |
| 4161 | Cash Storm | 44.32 | 10 | B Min | BB: 42.89 (+1.43s | 3.2%) | Beast | 12/04/2025 | 2025 Holiday Swim Festival | |
| 4162 | Linus Teufel | 44.32 | 10 | B Min | BB: 42.89 (+1.43s | 3.2%) | Florida West Coast Aquatics | 10/17/2025 | FRIDAY NITE RACES OCT 2025 | |
| 4163 | Julian Tai | 44.32 | 9 | B Min | BB: 42.89 (+1.43s | 3.2%) | Qns Aquatic Club | 02/28/2026 | 2026 MR QNS I Know I Can Invitational | |
| 4164 | Colin Camacho | 44.33 | 10 | B Min | BB: 42.89 (+1.44s | 3.2%) | Mason Manta Rays | 02/19/2026 | 2026 OH RAYS SC Regional Championships | |
| 4165 | Owen Adalia | 44.33 | 9 | B Min | BB: 42.89 (+1.44s | 3.2%) | Sporting Jax Aquatic Club | 10/25/2025 | 2025 SJAC Halloween Invitational | |
| 4166 | Jaden Feng | 44.33 | 7 | B Min | BB: 42.89 (+1.44s | 3.2%) | Olympic Cascade Aquatics | 03/28/2026 | 2026 PN Spring Showdown, Div1 Approved | |
| 4167 | Elis Oskvig | 44.33 | 9 | B Min | BB: 42.89 (+1.44s | 3.2%) | All Star Aquatics | 03/20/2026 | March Madness 2026 | |
| 4168 | Aiden Liu | 44.33 | 9 | B Min | BB: 42.89 (+1.44s | 3.2%) | Santa Clara Swim Club | 03/28/2026 | Swim South Bay | |
| 4169 | Michael Knodt | 44.33 | 10 | B Min | BB: 42.89 (+1.44s | 3.2%) | Minnetonka Swim Club | 01/30/2026 | 2026 MN MTKA TYR Team Challenge | |
| 4170 | Axl Landers | 44.34 | 9 | B Min | BB: 42.89 (+1.45s | 3.3%) | Starkville Swim Team | 11/21/2025 | 2025 Tiger Turkey Tumble | |
| 4171 | James McCreary | 44.34 | 10 | B Min | BB: 42.89 (+1.45s | 3.3%) | Madison Swimming Association | 01/30/2026 | MSA Ray Fogg Memorial Meet 2026 | |
| 4172 | Jayden Silveira | 44.34 | 10 | B Min | BB: 42.89 (+1.45s | 3.3%) | Fast Falcons | 09/21/2025 | 2025 FAST Pentathlon | |
| 4173 | Cooper Koehn | 44.34 | 10 | B Min | BB: 42.89 (+1.45s | 3.3%) | Starkville Swim Team | 11/21/2025 | 2025 Tiger Turkey Tumble | |
| 4174 | Tristan Wan | 44.34 | 8 | B Min | BB: 42.89 (+1.45s | 3.3%) | Palo Alto Stanford Aquatics | 02/21/2026 | Pacific Swimming 10 U SCY Championship | |
| 4175 | Arlo Cashion | 44.34 | 10 | B Min | BB: 42.89 (+1.45s | 3.3%) | Annapolis Swim Club | 09/26/2025 | RAC First Splash 2025 | |
| 4176 | Jasper Senko | 44.34 | 10 | B Min | BB: 42.89 (+1.45s | 3.3%) | Swim Streamline at Northampton | 01/03/2025 | 2025 SSAN Winter Invite | |
| 4177 | Brady Lindauer | 44.34 | 10 | B Min | BB: 42.89 (+1.45s | 3.3%) | Unattached | 10/25/2025 | 2025 SUNN Fall Classic | |
| 4178 | Liam Laughton | 44.34 | 10 | B Min | BB: 42.89 (+1.45s | 3.3%) | Retriever Aquatic Club | 03/21/2026 | 2026 Maryland 9 10 B Championship Meet | |
| 4179 | Aaron Kostogorov | 44.34 | 10 | B Min | BB: 42.89 (+1.45s | 3.3%) | Asheville Jewish Community Cen | 11/15/2025 | 2025 The Gourd Time Gathering | |
| 4180 | Nathanael Richards | 44.35 | 9 | B Min | BB: 42.89 (+1.46s | 3.3%) | Spokane Waves Aquatic Team | 01/31/2026 | Coug Winter Open | |
| 4181 | Benjamin Zhang | 44.35 | 8 | B Min | BB: 42.89 (+1.46s | 3.3%) | SwimMAC Carolina | 03/07/2026 | 2026 SwimMAC BC Championship | |
| 4182 | Grayson Ubaldo | 44.35 | 7 | B Min | BB: 42.89 (+1.46s | 3.3%) | Naval Academy Aquatic Club | 03/21/2026 | 2026 Maryland 8 Under Championship Meet | |
| 4183 | Aiden Mao | 44.35 | 10 | B Min | BB: 42.89 (+1.46s | 3.3%) | Pacific Dragons Swim Team | 01/24/2026 | 2026 PN PDST Winter Invitational Meet Approv | |
| 4184 | Ellison Waterworth | 44.35 | 10 | B Min | BB: 42.89 (+1.46s | 3.3%) | Nova of Virginia | 12/05/2025 | 2025 757swim Grand Illumination | |
| 4185 | John Tang | 44.36 | 10 | B Min | BB: 42.89 (+1.47s | 3.3%) | Wave Aquatics | 12/06/2025 | 2025 PN Fall Divisionals, Division 3 WAVE | |
| 4186 | Keaton Tanner | 44.36 | 9 | B Min | BB: 42.89 (+1.47s | 3.3%) | Lynchburg YMCA Swim Team | 10/18/2025 | LY 2025 YMCA October Meet | |
| 4187 | Cameron Roberts | 44.37 | 8 | B Min | BB: 42.89 (+1.48s | 3.3%) | Sailfish | 03/28/2026 | 2026 ST SGA Spring Fling Meet | |
| 4188 | Apollo Van Brunt | 44.37 | 8 | B Min | BB: 42.89 (+1.48s | 3.3%) | Kona Aquatics Club | 02/07/2026 | BIG ISLAND SWIMMING @ KCAC | |
| 4189 | Caden Ye | 44.37 | 10 | B Min | BB: 42.89 (+1.48s | 3.3%) | Santa Clara Swim Club | 11/14/2025 | 2025 Santa Clara Swim Club SC CBA Meet | |
| 4190 | Mason Park | 44.38 | 10 | B Min | BB: 42.89 (+1.49s | 3.4%) | Auburn Aquatics | 01/16/2026 | 2026 SE Ralph Crocker Classic | |
| 4191 | Edward Gross | 44.38 | 8 | B Min | BB: 42.89 (+1.49s | 3.4%) | Midwest Aquatic Club | 03/07/2026 | 2026 GTWY 8 Under Champs | |
| 4192 | Austin Jin | 44.38 | 9 | B Min | BB: 42.89 (+1.49s | 3.4%) | Asphalt Green Unified Aquatics | 03/07/2026 | 2026 MR AGUA Last Chance Invitational | |
| 4193 | James Dowd | 44.38 | 7 | B Min | BB: 42.89 (+1.49s | 3.4%) | Metro Area Life Time | 01/23/2026 | 2026 MR PAC Winter Classic Invitational | |
| 4194 | Alvaro Hernandez | 44.38 | 9 | B Min | BB: 42.89 (+1.49s | 3.4%) | YMCA of Northwest North Caroli | 10/10/2025 | 2025 TYDE Andy Craver Autumn Leaves Inv | |
| 4195 | Fedor Evstigneev | 44.38 | 9 | B Min | BB: 42.89 (+1.49s | 3.4%) | Santa Clara Swim Club | 09/27/2025 | 2025 MAC Season Kick Off | |
| 4196 | Zachary Iannamico | 44.38 | 10 | B Min | BB: 42.89 (+1.49s | 3.4%) | Inland Coastal Aquatic Club | 02/21/2026 | 2026 SI JBST Age Group Champs Max | |
| 4197 | John Asher | 44.38 | 10 | B Min | BB: 42.89 (+1.49s | 3.4%) | North Coast Aquatics | 02/21/2026 | 2026 SI MRA Age Group Champs Max Meet | |
| 4198 | Tanush Tandon | 44.38 | 8 | B Min | BB: 42.89 (+1.49s | 3.4%) | Crimson Aquatics | 12/12/2025 | 2025 NE CRIM Frosty Frenzy Trials Finals | |
| 4199 | Carter Stephenson | 44.39 | 9 | B Min | BB: 42.89 (+1.50s | 3.4%) | Atlantis Swimming | 11/08/2025 | Atlantis 2025 Fall Quack Tack Ular | |
| 4200 | Brennan Davis | 44.39 | 10 | B Min | BB: 42.89 (+1.50s | 3.4%) | Mason Makos Swim Team | 03/21/2026 | 2026 MAKO SPRING FLING | |
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.