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 | |
|---|---|---|---|---|---|---|---|---|---|
| 201 | 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 | |
| 202 | Ethan Zhao | 39.39 | 10 | AA Min | AAA: 38.99 (+0.40s | 1.0%) | Tac Titans | 07/16/2026 | 2026 NCS LC AG Championships | |
| 203 | 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 | |
| 204 | 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 | |
| 205 | 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 | |
| 206 | Zachary Snyder | 39.44 | 10 | AA Min | AAA: 38.99 (+0.45s | 1.1%) | Madison Area YMCA Mariners | 08/06/2025 | 2025 Summer Elite Showcase | |
| 207 | Alexander Lyavzin | 39.47 | 10 | AA Min | AAA: 38.99 (+0.48s | 1.2%) | SwimRight Team | 05/22/2026 | 2026 Doral Swim Club LCM Spring Invite | |
| 208 | Nicholas Leonard | 39.47 | 10 | AA Min | AAA: 38.99 (+0.48s | 1.2%) | SwimMAC Carolina | 07/16/2026 | 2026 NCS LC AG Championships | |
| 209 | Wesley Ho | 39.48 | 10 | AA Min | AAA: 38.99 (+0.49s | 1.2%) | Aspire Aquatics of Colorado | 07/24/2026 | 2026 CO Age Group LCM State Championships | |
| 210 | 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 | |
| 211 | Louis Yu | 39.49 | 8 | AA Min | AAA: 38.99 (+0.50s | 1.3%) | Santa Clara Swim Club | 07/30/2026 | Long Course Far Westerns | |
| 212 | 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 | |
| 213 | Alex Joy | 39.51 | 10 | AA Min | AAA: 38.99 (+0.52s | 1.3%) | Los Altos Mountain View Aquati | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | |
| 214 | Titus Wu | 39.52 | 10 | AA Min | AAA: 38.99 (+0.53s | 1.3%) | Firefish Aquatics | 06/19/2026 | 2026 Firefish June Jam | |
| 215 | 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 | |
| 216 | Aleksandr Rybin | 39.54 | 10 | AA Min | AAA: 38.99 (+0.55s | 1.4%) | King Aquatic Club | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 217 | 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 | |
| 218 | 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 | |
| 219 | David Limakov | 39.60 | 10 | AA Min | AAA: 38.99 (+0.61s | 1.5%) | Pipeline Swimming | 07/09/2026 | 2026 FL Summer Age Group Championships | |
| 220 | 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 | |
| 221 | Beckham Funderburk | 39.62 | 10 | AA Min | AAA: 38.99 (+0.63s | 1.6%) | SwimMAC Carolina | 07/16/2026 | 2026 NCS LC AG Championships | |
| 222 | 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 | |
| 223 | Kellan Yosay | 39.66 | 9 | AA Min | AAA: 38.99 (+0.67s | 1.7%) | SwimRVA | 06/12/2026 | 2026 SwimRVA Summer Invitational | |
| 224 | 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 | |
| 225 | Roddy Yang | 39.69 | 10 | AA Min | AAA: 38.99 (+0.70s | 1.8%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 226 | Cameron Boitano | 39.70 | 10 | AA Min | AAA: 38.99 (+0.71s | 1.8%) | Pleasanton Seahawks | 07/30/2026 | Long Course Far Westerns | |
| 227 | 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 | |
| 228 | Alister Carlton | 39.70 | 9 | AA Min | AAA: 38.99 (+0.71s | 1.8%) | Nitro Swimming | 06/11/2026 | 2026 ST NIST George Block Invitational | |
| 229 | 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 | |
| 230 | Elbert Wang | 39.72 | 10 | AA Min | AAA: 38.99 (+0.73s | 1.8%) | Mason Manta Rays | 07/23/2026 | 2026 OH LC Junior Championships | |
| 231 | Castle Cline | 39.72 | 10 | AA Min | AAA: 38.99 (+0.73s | 1.8%) | Seattle Metropolitan Aquatic C | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 232 | Ray Yu | 39.73 | 10 | AA Min | AAA: 38.99 (+0.74s | 1.9%) | Aquazot Swim Club | 07/24/2025 | 2025 CA SCS RAA Summer A G Champs | |
| 233 | Robert Botterill | 39.73 | 10 | AA Min | AAA: 38.99 (+0.74s | 1.9%) | Central Minnesota Aquatics | 06/26/2026 | 2026 SD SFST Summer Surge Classic | |
| 234 | Aiden Cowles | 39.74 | 10 | AA Min | AAA: 38.99 (+0.75s | 1.9%) | SwimMAC Carolina | 06/19/2026 | GSA 70th Annual Eastern Invitational | |
| 235 | Ziqian Liu | 39.74 | 10 | AA Min | AAA: 38.99 (+0.75s | 1.9%) | Tac Titans | 05/15/2026 | 2026 TAC TITANS Spring Fling Meet | |
| 236 | Braden Dunlap | 39.75 | 9 | AA Min | AAA: 38.99 (+0.76s | 1.9%) | Naval Academy Aquatic Club | 07/29/2026 | 2026 MD LSC LC Championship | |
| 237 | Bennett Meusel | 39.78 | 10 | AA Min | AAA: 38.99 (+0.79s | 2.0%) | South East Metro Sharks | 06/19/2026 | 2026 MN MAN Red White Blue Invite Copied | |
| 238 | Mason Nordin | 39.80 | 10 | AA Min | AAA: 38.99 (+0.81s | 2.0%) | Foxjets Swim Team | 06/11/2026 | 2026 MN AQJT Aquajets Summer Spectacular | |
| 239 | Timur Kolchin | 39.80 | 10 | AA Min | AAA: 38.99 (+0.81s | 2.0%) | Fast Lane Aquatics | 05/01/2026 | 2026 WFLA SPRING OPEN | |
| 240 | Alexander Dmyterko | 39.82 | 10 | AA Min | AAA: 38.99 (+0.83s | 2.1%) | Wahoo\\\\\\'s of Wellington | 06/26/2026 | 2026 Michael Lohberg Invitational | |
| 241 | Samuel Fuerstneau | 39.84 | 10 | AA Min | AAA: 38.99 (+0.85s | 2.1%) | Edina Swim Club | 05/03/2026 | 2026 MN SEMS LC Invite | |
| 242 | Kallen Joyce | 39.84 | 9 | AA Min | AAA: 38.99 (+0.85s | 2.1%) | Kamehameha Swim Club | 07/16/2026 | 2026 HISI LCM Championships | |
| 243 | Merrick Harner | 39.85 | 10 | AA Min | AAA: 38.99 (+0.86s | 2.2%) | Brevard Swim Club | 07/09/2026 | 2026 FL Summer Age Group Championships | |
| 244 | Connor McCracken | 39.85 | 9 | AA Min | AAA: 38.99 (+0.86s | 2.2%) | Nova of Virginia | 06/11/2026 | NOVA 2026 Virginia Commonwealth Games | |
| 245 | Samuel Fuetsch | 39.86 | 9 | AA Min | AAA: 38.99 (+0.87s | 2.2%) | Tac Titans | 06/11/2026 | 2026 CMC Triangle Classic Meet | |
| 246 | Rishan Shah | 39.88 | 10 | AA Min | AAA: 38.99 (+0.89s | 2.2%) | United Swim Club | 06/05/2026 | 2026 NE SAC America S Cup | |
| 247 | Samuel Wacek | 39.91 | 10 | AA Min | AAA: 38.99 (+0.92s | 2.3%) | Alexandria Swim Club | 06/19/2026 | 2026 SD Aberdeen Summer High Point Swim Meet | |
| 248 | Aiden Turner | 39.93 | 10 | AA Min | AAA: 38.99 (+0.94s | 2.4%) | Old Dominion Aquatic Club | 07/16/2026 | 2026 Virginia Swimming LC Age Group Champions | |
| 249 | Silas Sebera | 39.93 | 10 | AA Min | AAA: 38.99 (+0.94s | 2.4%) | Legacy Swim Club | 07/16/2026 | 2026 Virginia Swimming LC Age Group Champions | |
| 250 | David Xiong | 39.93 | 8 | AA Min | AAA: 38.99 (+0.94s | 2.4%) | Arctic Aquatics | 06/26/2026 | 2026 NE MST ESC June Memorial | |
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.