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 | |
|---|---|---|---|---|---|---|---|---|---|
| 1001 | Waring Boon | 44.66 | 8 | BB Min | A: 43.09 (+1.57s | 3.5%) | Tac Titans | 05/22/2026 | 2026 TAC TITANS Memorial Day Meet | |
| 1002 | David Son | 44.66 | 9 | BB Min | A: 43.09 (+1.57s | 3.5%) | Mission Aurora Colorado Swimmi | 06/06/2026 | 2026 CO MACS Suburban League Invite | |
| 1003 | Everett Gerlock | 44.67 | 9 | BB Min | A: 43.09 (+1.58s | 3.5%) | Gunnison Stingrays | 07/10/2026 | 2026 CO Western Slope League Championships | |
| 1004 | Silas Roland | 44.68 | 9 | BB Min | A: 43.09 (+1.59s | 3.6%) | Univ. of Denver Hilltoppers | 07/11/2026 | 2026 CO SBL Summer Sizzler | |
| 1005 | Daniel Yates | 44.68 | 10 | BB Min | A: 43.09 (+1.59s | 3.6%) | Upper Valley Aquatic Club | 06/26/2026 | 2026 NE MST ESC June Memorial | |
| 1006 | Adrian Goo | 44.68 | 10 | BB Min | A: 43.09 (+1.59s | 3.6%) | Walnut Creek Aquabears | 06/13/2026 | Orinda PC LC AG C B BB+ | |
| 1007 | Ethan Huang | 44.69 | 10 | BB Min | A: 43.09 (+1.60s | 3.6%) | Rose Bowl Aquatics | 06/12/2025 | 2025 CA SCS RAA June Age Group Championships | |
| 1008 | Yanbo LI | 44.69 | 9 | BB Min | A: 43.09 (+1.60s | 3.6%) | Seattle Metropolitan Aquatic C | 05/16/2025 | 2025 PN IST Sockeye Springtime Madness | |
| 1009 | Sanders Ford | 44.69 | 9 | BB Min | A: 43.09 (+1.60s | 3.6%) | Las Cruces Aquatic Team | 06/26/2026 | 2026 BD EPAP Jack White Memorial Classic | |
| 1010 | Brooks Noblett | 44.70 | 10 | BB Min | A: 43.09 (+1.61s | 3.6%) | Westlake Aquatic Facility | 04/19/2026 | 2026 ST TXLA 10 U Long Course Kick Off | |
| 1011 | Johnathan Rudd | 44.71 | 10 | BB Min | A: 43.09 (+1.62s | 3.6%) | Jupiter Dragons Swim Team | 05/08/2026 | 2026 Wellington May Long Course Meet | |
| 1012 | Gustavo Granados | 44.71 | 9 | BB Min | A: 43.09 (+1.62s | 3.6%) | Fenix Swim Club | 05/22/2026 | 2026 Doral Swim Club LCM Spring Invite | |
| 1013 | Beau Jakubowski | 44.71 | 9 | BB Min | A: 43.09 (+1.62s | 3.6%) | Aces Swim Club | 04/12/2026 | 2026 CO NJ SBL Pentathlon 12 U | |
| 1014 | Calder Brelsford-La Badie | 44.71 | 10 | BB Min | A: 43.09 (+1.62s | 3.6%) | Bainbridge Island Swim Club | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 1015 | William Knauss IV | 44.72 | 8 | BB Min | A: 43.09 (+1.63s | 3.6%) | Nation\\\\\\'s Capital Swim Club | 06/05/2026 | HNVR Storm Surge 2026 | |
| 1016 | Nicholas Chen | 44.72 | 9 | BB Min | A: 43.09 (+1.63s | 3.6%) | Kingfish Swimming Medfield | 06/26/2026 | 2026 NE NSSC June 26 28 MIT Invitational | |
| 1017 | Jack Rissman | 44.72 | 9 | BB Min | A: 43.09 (+1.63s | 3.6%) | Edina Swim Club | 06/05/2026 | 2026 MN NSAC Summer Invite | |
| 1018 | Thomas Nguyen | 44.73 | 10 | BB Min | A: 43.09 (+1.64s | 3.7%) | Cascade Swim Club | 05/15/2026 | 2026 PN IST Sockeye Springtime Madness App | |
| 1019 | Ryder Carsey | 44.73 | 10 | BB Min | A: 43.09 (+1.64s | 3.7%) | Greater Toledo Aquatic Club | 07/23/2026 | 2026 OH LC Junior Championships | |
| 1020 | Campbell Leverett | 44.73 | 8 | BB Min | A: 43.09 (+1.64s | 3.7%) | Saluki Swim Club | 05/29/2026 | 2026 Meet Me In St Louis Invite | |
| 1021 | Mo Chen | 44.73 | 10 | BB Min | A: 43.09 (+1.64s | 3.7%) | Wave Aquatics | 07/23/2026 | 2026 PN LC 12 U Championships Approved | |
| 1022 | Brandon Son | 44.73 | 9 | BB Min | A: 43.09 (+1.64s | 3.7%) | Columbia River Swim Team | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 1023 | Felix Wang | 44.74 | 10 | BB Min | A: 43.09 (+1.65s | 3.7%) | Eastside Aquatic Swim Team | 07/10/2026 | 2026 PN OCA Last Chance Invitational Approve | |
| 1024 | Vincent Schremer | 44.74 | 8 | BB Min | A: 43.09 (+1.65s | 3.7%) | Life Time Oregon Swim Team | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 1025 | Preston Call | 44.75 | 9 | BB Min | A: 43.09 (+1.66s | 3.7%) | Ensworth Aquatics | 07/17/2026 | 2026 SE Southeastern Summer LC Championships | |
| 1026 | Emil Kirov | 44.75 | 10 | BB Min | A: 43.09 (+1.66s | 3.7%) | Andover-North Andover YMCA Hur | 07/11/2026 | 2026 NE YNS July Last Chance Meet | |
| 1027 | Dalton Dodson | 44.75 | 9 | BB Min | A: 43.09 (+1.66s | 3.7%) | Hydra Aquatics | 07/23/2026 | 2026 OH LC Junior Championships | |
| 1028 | Amos Saladino | 44.75 | 10 | BB Min | A: 43.09 (+1.66s | 3.7%) | Sarasota Tsunami Swim Team | 05/02/2026 | 2026 Sea Dragon May Open | |
| 1029 | Ryan Kummer | 44.76 | 10 | BB Min | A: 43.09 (+1.67s | 3.7%) | Aquatic Team Of Mecklenburg | 07/08/2026 | ATOM LC Finale 2026 | |
| 1030 | Marcello Rinaldi | 44.76 | 10 | BB Min | A: 43.09 (+1.67s | 3.7%) | Minnetonka Swim Club | 05/08/2026 | 2026 MN STRM Spring Startup | |
| 1031 | Finn Winchell | 44.76 | 10 | BB Min | A: 43.09 (+1.67s | 3.7%) | Lowes YMCA Lightning Swim Team | 06/26/2026 | 2026 USRY LC Championships | |
| 1032 | Levi Cheung | 44.76 | 8 | BB Min | A: 43.09 (+1.67s | 3.7%) | Beaverton Area Aquatics Club | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 1033 | Bruce Asmega | 44.77 | 10 | BB Min | A: 43.09 (+1.68s | 3.8%) | Pacifica Sea Lions | 07/25/2026 | Alto Last Splash | |
| 1034 | Lucas Moyal | 44.77 | 9 | BB Min | A: 43.09 (+1.68s | 3.8%) | Amherst Tritons Swim Team | 06/20/2026 | 2026 NE NSSC Invitational Springfield College | |
| 1035 | Jenson Beal | 44.77 | 8 | BB Min | A: 43.09 (+1.68s | 3.8%) | Sporting Jax Aquatic Club | 07/24/2026 | 2026 Area 1 LCM Championships | |
| 1036 | James Mauldin | 44.79 | 9 | BB Min | A: 43.09 (+1.70s | 3.8%) | Huntsville Swim Association | 06/26/2026 | 2026 HSA June Invitational | |
| 1037 | Kieran Sherburne | 44.79 | 10 | BB Min | A: 43.09 (+1.70s | 3.8%) | Amherst Tritons Swim Team | 05/08/2026 | 2026 NE CRA MIT Team Specialty LC Meet | |
| 1038 | Mateo Tinoco Iraheta | 44.80 | 9 | BB Min | A: 43.09 (+1.71s | 3.8%) | Walla Walla Swim Club | 07/24/2026 | 2026 IES LC CHAMPIONSHIPS | |
| 1039 | Kian Bryson | 44.80 | 10 | BB Min | A: 43.09 (+1.71s | 3.8%) | Lake Oswego Swim Club | 06/06/2025 | 2025 THSC June Invitational | |
| 1040 | Nathan Bailey | 44.80 | 10 | BB Min | A: 43.09 (+1.71s | 3.8%) | Canyons Aquatic Club | 07/23/2026 | 2026 CA SCS Summer A G Champs | |
| 1041 | Leo Grace | 44.81 | 8 | BB Min | A: 43.09 (+1.72s | 3.8%) | Unattached | 07/24/2026 | 2026 IES LC CHAMPIONSHIPS | |
| 1042 | William Hall | 44.81 | 9 | BB Min | A: 43.09 (+1.72s | 3.8%) | Tennessee Aquatics | 06/18/2026 | 2026 Tennessee Aquatics June Invitational | |
| 1043 | Jayden Ruan | 44.81 | 10 | BB Min | A: 43.09 (+1.72s | 3.8%) | Nitro Swimming | 06/20/2026 | 2026 ST NTRO LC Summer Classic | |
| 1044 | Henry Broadhurst | 44.82 | 10 | BB Min | A: 43.09 (+1.73s | 3.9%) | SwimRVA | 06/12/2026 | 2026 SwimRVA Summer Invitational | |
| 1045 | Adrian Pascu | 44.83 | 9 | BB Min | A: 43.09 (+1.74s | 3.9%) | Gold\\\\\\'s Aquatics Club (Camas) | 05/01/2026 | 2026 THSC Spring Invite | |
| 1046 | Hunter Chen | 44.83 | 10 | BB Min | A: 43.09 (+1.74s | 3.9%) | Flying Fish Swim Club | 06/11/2026 | ARMADA 2026 SCS June AG Invite | |
| 1047 | Declan Kimball | 44.84 | 10 | BB Min | A: 43.09 (+1.75s | 3.9%) | Williamsburg Aquatic Club | 06/26/2026 | 2026 VSI LC SE District Champs | |
| 1048 | Benjamin Verhoef | 44.84 | 9 | BB Min | A: 43.09 (+1.75s | 3.9%) | Bolles School Sharks | 06/18/2026 | 2026 June Classic | |
| 1049 | Ethan Huang | 44.86 | 9 | BB Min | A: 43.09 (+1.77s | 3.9%) | Atlantic Coast Athletic Club | 05/01/2026 | 2026 HOKI May Day Invite Copied | |
| 1050 | Kaleb Luu | 44.86 | 9 | BB Min | A: 43.09 (+1.77s | 3.9%) | Pleasanton Seahawks | 06/20/2026 | Alto Summer Swelter | |
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.