USA Boys 10 & under - 50 M 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 | |
|---|---|---|---|---|---|---|---|---|---|
| 151 | Renzhi Dong | 39.06 | 10 | AA Min | AAA: 38.99 (+0.07s | 0.2%) | Charles River Aquatics | 05/08/2026 | 2026 NE CRA MIT Team Specialty LC Meet | |
| 152 | Luke Ford | 39.06 | 10 | AA Min | AAA: 38.99 (+0.07s | 0.2%) | The Claremont Club | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | |
| 153 | Mitchell Eichorn | 39.07 | 10 | AA Min | AAA: 38.99 (+0.08s | 0.2%) | Buckeye Swim Club | 07/23/2026 | 2026 OH LC Junior Championships | |
| 154 | Jacob Liu | 39.09 | 10 | AA Min | AAA: 38.99 (+0.10s | 0.3%) | Aquazot Swim Club | 07/16/2026 | 2026 SCS ELITE Age Group LCM Championship | |
| 155 | Qifan Gong | 39.13 | 9 | AA Min | AAA: 38.99 (+0.14s | 0.4%) | Bellevue Club Swim Team | 07/23/2026 | 2026 PN 12 U Long Course Championships Appro | |
| 156 | Aaron Xu | 39.15 | 10 | AA Min | AAA: 38.99 (+0.16s | 0.4%) | X-Cel Swimming | 06/26/2026 | EEX Jeffrey S Mace Summer Sizzle XXXIV | |
| 157 | Alexander Baytin | 39.16 | 10 | AA Min | AAA: 38.99 (+0.17s | 0.4%) | X-Cel Swimming | 05/15/2026 | 2026 PTAC Tiger Challenge | |
| 158 | Yixuan Zhu | 39.24 | 10 | AA Min | AAA: 38.99 (+0.25s | 0.6%) | Pleasanton Seahawks | 07/30/2026 | Long Course Far Westerns | |
| 159 | Luke VanWoerkom | 39.25 | 10 | AA Min | AAA: 38.99 (+0.26s | 0.7%) | Unattached | 07/30/2026 | 2026 CZ 14 U Championship Meet IN | |
| 160 | Brooks Nemeth | 39.26 | 9 | AA Min | AAA: 38.99 (+0.27s | 0.7%) | SwimRVA | 07/16/2026 | 2026 Virginia Swimming LC Age Group Champions | |
| 161 | Elliott Lindley | 39.28 | 10 | AA Min | AAA: 38.99 (+0.29s | 0.7%) | Los Altos Mountain View Aquati | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | |
| 162 | Jensen Huang | 39.30 | 10 | AA Min | AAA: 38.99 (+0.31s | 0.8%) | Arcadia Riptides Swim Club | 06/11/2026 | ARMADA 2026 SCS June AG Invite | |
| 163 | John Stitzenberg | 39.30 | 9 | AA Min | AAA: 38.99 (+0.31s | 0.8%) | North Carolina Aquatic Club | 06/25/2026 | ONSA Independence Invitational Copied | |
| 164 | Ari Thorne | 39.30 | 10 | AA Min | AAA: 38.99 (+0.31s | 0.8%) | Sarasota Sharks | 07/09/2026 | 2026 FL Summer Age Group Championships | |
| 165 | Preston Kerchusky | 39.31 | 10 | AA Min | AAA: 38.99 (+0.32s | 0.8%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 166 | Arlo Nagy | 39.32 | 9 | AA Min | AAA: 38.99 (+0.33s | 0.8%) | Minnetonka Swim Club | 06/11/2026 | 2026 MN AQJT Aquajets Summer Spectacular | |
| 167 | Austin Loving | 39.36 | 10 | AA Min | AAA: 38.99 (+0.37s | 0.9%) | Nova of Virginia | 06/11/2026 | NOVA 2026 Virginia Commonwealth Games | |
| 168 | Philip Rodriguez | 39.36 | 10 | AA Min | AAA: 38.99 (+0.37s | 0.9%) | Tac Titans | 07/16/2026 | 2026 NCS LC AG Championships | |
| 169 | Dalton Gonzalez | 39.37 | 10 | AA Min | AAA: 38.99 (+0.38s | 1.0%) | Nitro Swimming | 06/20/2026 | 2026 ST NTRO LC Summer Classic | |
| 170 | Callum Ohde | 39.38 | 10 | AA Min | AAA: 38.99 (+0.39s | 1.0%) | Unattached | 08/06/2026 | 2026 CZ 14 U Championship Meet MN | |
| 171 | Shaler Berry | 39.38 | 10 | AA Min | AAA: 38.99 (+0.39s | 1.0%) | San Diego Imperial All Star TM | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 172 | Marcus Lin | 39.39 | 9 | AA Min | AAA: 38.99 (+0.40s | 1.0%) | Aquazot Swim Club | 07/23/2026 | 2026 CA SCS Summer A G Champs | |
| 173 | Ethan Zhao | 39.39 | 10 | AA Min | AAA: 38.99 (+0.40s | 1.0%) | Tac Titans | 07/16/2026 | 2026 NCS LC AG Championships | |
| 174 | Nan-yi Yeh | 39.41 | 10 | AA Min | AAA: 38.99 (+0.42s | 1.1%) | Marlins Of Raleigh | 07/16/2026 | 2026 NCS LC AG Championships | |
| 175 | Timur Kochmar | 39.42 | 9 | AA Min | AAA: 38.99 (+0.43s | 1.1%) | SwimRight Team | 05/22/2026 | 2026 Doral Swim Club LCM Spring Invite | |
| 176 | Franklin Chao | 39.43 | 10 | AA Min | AAA: 38.99 (+0.44s | 1.1%) | North Carolina Aquatic Club | 06/25/2026 | ONSA Independence Invitational Copied | |
| 177 | Nicholas Leonard | 39.47 | 10 | AA Min | AAA: 38.99 (+0.48s | 1.2%) | SwimMAC Carolina | 07/16/2026 | 2026 NCS LC AG Championships | |
| 178 | Matthew Winn | 39.48 | 9 | AA Min | AAA: 38.99 (+0.49s | 1.2%) | Stingray Swim Team | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 179 | Louis Yu | 39.49 | 9 | AA Min | AAA: 38.99 (+0.50s | 1.3%) | Santa Clara Swim Club | 07/30/2026 | Long Course Far Westerns | |
| 180 | Isaiah Isreal | 39.50 | 9 | AA Min | AAA: 38.99 (+0.51s | 1.3%) | New Albany Aquatics Club | 07/23/2026 | 2026 OH LC Junior Championships | |
| 181 | Armaan Bhandari | 39.52 | 10 | AA Min | AAA: 38.99 (+0.53s | 1.3%) | X-Cel Swimming | 07/23/2026 | 2026 NJ Swim LC Gold Championships | |
| 182 | Thiago Mantilla | 39.52 | 10 | AA Min | AAA: 38.99 (+0.53s | 1.3%) | South Florida Aquatic Club | 07/16/2026 | 2026 FGC Summer LC Age Group Championships | |
| 183 | Riccardo Sardena | 39.53 | 10 | AA Min | AAA: 38.99 (+0.54s | 1.4%) | Swim Team of Placentia | 07/23/2026 | 2026 CA SCS RAA Summer A G Champs Copied | |
| 184 | Aleksandr Rybin | 39.54 | 10 | AA Min | AAA: 38.99 (+0.55s | 1.4%) | King Aquatic Club | 07/23/2026 | 2026 PN 12 U Long Course Championships Appro | |
| 185 | Alisher Fahriddinov | 39.56 | 10 | AA Min | AAA: 38.99 (+0.57s | 1.4%) | Princeton Tiger Aquatic Club | 07/23/2026 | 2026 NJ Swim LC Gold Championships | |
| 186 | Michael Krumme | 39.56 | 10 | AA Min | AAA: 38.99 (+0.57s | 1.4%) | Northern KY Clippers | 07/16/2026 | 2026 Kentucky Swimming LC Championship 2 Co | |
| 187 | Tyler Kuykendall | 39.59 | 10 | AA Min | AAA: 38.99 (+0.60s | 1.5%) | Annapolis Swim Club | 07/29/2026 | 2026 MD LSC LC Championship | |
| 188 | Finn Halvorson | 39.62 | 10 | AA Min | AAA: 38.99 (+0.63s | 1.6%) | Foxjets Swim Team | 07/25/2026 | 2026 MN RSC LC 10 U State Championship | |
| 189 | Mason Lam | 39.63 | 9 | AA Min | AAA: 38.99 (+0.64s | 1.6%) | Eagle Swim Team Inc. | 07/29/2026 | 2026 MD LSC LC Championship | |
| 190 | Zeeon Zang | 39.63 | 8 | AA Min | AAA: 38.99 (+0.64s | 1.6%) | X-Cel Swimming | 06/20/2026 | 2026 Hot Summer Nights | |
| 191 | Croix Stickney | 39.64 | 10 | AA Min | AAA: 38.99 (+0.65s | 1.6%) | Unattached | 06/19/2026 | 2026 MultiCultural Zones | |
| 192 | Mateo Salvador | 39.66 | 10 | AA Min | AAA: 38.99 (+0.67s | 1.7%) | Metro Area Life Time | 06/20/2026 | 2026 Hot Summer Nights | |
| 193 | Kellan Yosay | 39.66 | 9 | AA Min | AAA: 38.99 (+0.67s | 1.7%) | SwimRVA | 06/12/2026 | 2026 SwimRVA Summer Invitational | |
| 194 | Charles Sanders | 39.67 | 10 | AA Min | AAA: 38.99 (+0.68s | 1.7%) | Tac Titans | 05/22/2026 | 2026 TAC TITANS Memorial Day Meet | |
| 195 | Roddy Yang | 39.69 | 10 | AA Min | AAA: 38.99 (+0.70s | 1.8%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 196 | Cameron Boitano | 39.70 | 10 | AA Min | AAA: 38.99 (+0.71s | 1.8%) | Pleasanton Seahawks | 07/30/2026 | Long Course Far Westerns | |
| 197 | Alister Carlton | 39.70 | 10 | AA Min | AAA: 38.99 (+0.71s | 1.8%) | Nitro Swimming | 06/11/2026 | 2026 ST NIST George Block Invitational | |
| 198 | Orion Blue-Smith | 39.70 | 10 | AA Min | AAA: 38.99 (+0.71s | 1.8%) | Palo Alto Stanford Aquatics | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | |
| 199 | Arsenii Chebaev | 39.71 | 10 | AA Min | AAA: 38.99 (+0.72s | 1.8%) | Bravo Swim Team | 07/16/2026 | 2026 FGC Summer LC Age Group Championships | |
| 200 | Maddox Jordan | 39.71 | 10 | AA Min | AAA: 38.99 (+0.72s | 1.8%) | Prime Aquatics | 07/17/2026 | 2026 SE Southeastern Summer LC Championships | |
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.