USA Boys 10 & under - 50 M Breast
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 | |
|---|---|---|---|---|---|---|---|---|---|
| 101 | Matthew Ko | 44.21 | 10 | AA Min | AAA: 43.59 (+0.62s | 1.4%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 102 | Leon Escarcega Hernandez | 44.34 | 10 | AA Min | AAA: 43.59 (+0.75s | 1.7%) | Halcones Marinos Capn | 05/01/2026 | 2026 ST AAAA 23rd Annual Cinco De Mayo | |
| 103 | Liam Potsch | 44.34 | 10 | AA Min | AAA: 43.59 (+0.75s | 1.7%) | Unattached | 08/06/2026 | 2026 CZ 14 U Championship Meet MN | |
| 104 | Ryan Latronica | 44.40 | 10 | AA Min | AAA: 43.59 (+0.81s | 1.8%) | Hills Hurricane Swimming | 07/31/2025 | 2025 Long Course Far Western Championship | |
| 105 | Sean Unertl | 44.42 | 9 | AA Min | AAA: 43.59 (+0.83s | 1.9%) | Unattached | 08/06/2026 | 2026 CZ 14 U Championship Meet MN | |
| 106 | Blake Porteus | 44.44 | 10 | AA Min | AAA: 43.59 (+0.85s | 1.9%) | Westerville Aquatic Club | 07/23/2026 | 2026 OH LC Junior Championships | |
| 107 | Leonardo Mora Carrillo | 44.45 | 10 | AA Min | AAA: 43.59 (+0.86s | 1.9%) | Blue Marlins Aquatic Club | 06/11/2026 | 2026 RAFC Summer Solstice Invitational | |
| 108 | JC Marquez | 44.47 | 10 | AA Min | AAA: 43.59 (+0.88s | 2.0%) | Heritage Aquatic Team | 07/16/2026 | 2026 FGC Summer LC Age Group Championships | |
| 109 | Leo Williams | 44.48 | 9 | AA Min | AAA: 43.59 (+0.89s | 2.0%) | Marlins Of Raleigh | 04/25/2026 | 2026 NCAC Quad Meet | |
| 110 | Max Ong | 44.48 | 10 | AA Min | AAA: 43.59 (+0.89s | 2.0%) | Pacific Swim | 07/23/2026 | 2026 SI LC AGE GROUP CHAMPIONSHIPS | |
| 111 | Everett Cassidy | 44.51 | 10 | AA Min | AAA: 43.59 (+0.92s | 2.1%) | Nsea Swim | 07/16/2026 | 2026 NCS LC AG Championships | |
| 112 | Wyatt Larson | 44.51 | 10 | AA Min | AAA: 43.59 (+0.92s | 2.1%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 113 | Reyan Dhwajad | 44.57 | 10 | AA Min | AAA: 43.59 (+0.98s | 2.2%) | SwimMAC Carolina | 07/16/2026 | 2026 NCS LC AG Championships | |
| 114 | Nicholas Scarpitti | 44.58 | 10 | AA Min | AAA: 43.59 (+0.99s | 2.2%) | Cincinnati Aquatic Club | 07/23/2026 | 2026 OH LC Junior Championships | |
| 115 | Anderson Grant | 44.59 | 10 | AA Min | AAA: 43.59 (+1.00s | 2.2%) | Upper Arlington Swim Club | 07/23/2026 | 2026 OH LC Junior Championships | |
| 116 | Michael Krumme | 44.60 | 10 | AA Min | AAA: 43.59 (+1.01s | 2.3%) | Northern KY Clippers | 07/16/2026 | 2026 Kentucky Swimming LC Championship 2 Co | |
| 117 | Renzhi Dong | 44.61 | 10 | AA Min | AAA: 43.59 (+1.02s | 2.3%) | Charles River Aquatics | 06/26/2026 | 2026 NE SUN Summer Solstice | |
| 118 | Dylan Deahn | 44.61 | 9 | AA Min | AAA: 43.59 (+1.02s | 2.3%) | Csp Tideriders | 07/23/2026 | 2026 Ozark Long Course Champs Copied | |
| 119 | Daniel Heilman | 44.62 | 10 | AA Min | AAA: 43.59 (+1.03s | 2.3%) | San Francisco Seals Swim Team | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | |
| 120 | Easson Ji | 44.63 | 9 | AA Min | AAA: 43.59 (+1.04s | 2.3%) | Xtreme Swim Club | 06/12/2026 | 2026 NE CS Summer Solstice | |
| 121 | Arick Eisler | 44.65 | 9 | AA Min | AAA: 43.59 (+1.06s | 2.4%) | Tac Titans | 07/16/2026 | 2026 NCS LC AG Championships | |
| 122 | Simon Krel | 44.65 | 10 | AA Min | AAA: 43.59 (+1.06s | 2.4%) | Metro Area Life Time | 05/02/2026 | 2026 STAC Thank You Mom | |
| 123 | Titus Wu | 44.66 | 10 | AA Min | AAA: 43.59 (+1.07s | 2.4%) | Unattached | 05/01/2026 | 2026 HOKI May Day Invite Copied | |
| 124 | Zaheim Cameron | 44.67 | 10 | AA Min | AAA: 43.59 (+1.08s | 2.4%) | Hamilton Area YMCA | 06/26/2026 | EEX Jeffrey S Mace Summer Sizzle XXXIV | |
| 125 | Henry Goddard | 44.70 | 10 | AA Min | AAA: 43.59 (+1.11s | 2.5%) | Lake Oswego Swim Club | 07/10/2026 | 2026 OSI Arena Summer LC 12 U Championships | |
| 126 | Miles Lee | 44.72 | 10 | AA Min | AAA: 43.59 (+1.13s | 2.5%) | New Wave Swim Team | 05/15/2026 | 2026 TAC TITANS Spring Fling Meet | |
| 127 | Gavin Johnston | 44.74 | 10 | AA Min | AAA: 43.59 (+1.15s | 2.6%) | Manta Ray Aquatics | 07/23/2026 | 2026 SI LC AGE GROUP CHAMPIONSHIPS | |
| 128 | Silas Sebera | 44.76 | 10 | AA Min | AAA: 43.59 (+1.17s | 2.6%) | Unattached | 05/29/2026 | 2026 SwimRVA Success Bell | |
| 129 | Aaron Yang | 44.76 | 10 | AA Min | AAA: 43.59 (+1.17s | 2.6%) | Tac Titans | 07/16/2026 | 2026 NCS LC AG Championships | |
| 130 | Alexander Xie | 44.77 | 10 | AA Min | AAA: 43.59 (+1.18s | 2.6%) | Carmel Swim Club | 06/04/2026 | 98th Ohio Valley Championships 2026 | |
| 131 | Paxton Marvray | 44.79 | 10 | AA Min | AAA: 43.59 (+1.20s | 2.7%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 132 | James Zechmeister | 44.79 | 9 | AA Min | AAA: 43.59 (+1.20s | 2.7%) | Minnetonka Swim Club | 05/28/2026 | 2026 MN WOLF HUFF N PUFF INVITE | |
| 133 | Graeme Mulhearn | 44.80 | 6 | AA Min | AAA: 43.59 (+1.21s | 2.7%) | Livermore AquaCowboys | 06/13/2026 | PC CDST LC C B BB+ 26 074 | |
| 134 | Henry Havens | 44.80 | 10 | AA Min | AAA: 43.59 (+1.21s | 2.7%) | Northern KY Clippers | 07/16/2026 | 2026 Kentucky Swimming LC Championship 2 Co | |
| 135 | Elliott Lindley | 44.90 | 10 | AA Min | AAA: 43.59 (+1.31s | 2.9%) | Los Altos Mountain View Aquati | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | |
| 136 | Ethan Qu | 44.91 | 10 | AA Min | AAA: 43.59 (+1.32s | 2.9%) | Santa Clara Swim Club | 07/17/2026 | 2026 Adam Szmidt Memorial PC Summer AG Champs | |
| 137 | Parker Baird | 44.92 | 10 | AA Min | AAA: 43.59 (+1.33s | 3.0%) | Woodward Aquatics Club | 05/16/2026 | 2026 Opelika Open | |
| 138 | Thomas Sayer | 44.93 | 10 | AA Min | AAA: 43.59 (+1.34s | 3.0%) | Team Minnesota | 08/06/2026 | 2026 CZ 14 U Championship Meet MN | |
| 139 | Kevin Liu | 44.94 | 10 | AA Min | AAA: 43.59 (+1.35s | 3.0%) | Arctic Aquatics | 07/17/2026 | 2026 NE MST ESC LCM 12 Under Championship | |
| 140 | Everett Muzzarelli | 44.95 | 8 | AA Min | AAA: 43.59 (+1.36s | 3.0%) | Woodbridge Swim Team | 07/23/2026 | 2026 CA SCS Summer A G Champs | |
| 141 | Sawyer Nichols | 44.96 | 10 | AA Min | AAA: 43.59 (+1.37s | 3.0%) | Opelika Swim Team | 05/16/2026 | 2026 Opelika Open | |
| 142 | Elijah Gabbard | 44.96 | 10 | AA Min | AAA: 43.59 (+1.37s | 3.0%) | Lake Cumberland Swim | 07/16/2026 | 2026 Kentucky Swimming LC Championship 2 Co | |
| 143 | Owen Tan | 45.01 | 9 | AA Min | AAA: 43.59 (+1.42s | 3.2%) | Unattached | 08/05/2026 | 2026 Western Zone Age Group Championships | |
| 144 | Jon Miriovsky | 45.01 | 10 | AA Min | AAA: 43.59 (+1.42s | 3.2%) | Huntsville Swim Association | 07/17/2026 | 2026 SE Southeastern Summer LC Championships | |
| 145 | Daniel Comport | 45.03 | 10 | AA Min | AAA: 43.59 (+1.44s | 3.2%) | Highbridge Aquatics | 07/16/2026 | 2026 Kentucky Swimming LC Championship 2 Co | |
| 146 | Ian Feng | 45.04 | 9 | AA Min | AAA: 43.59 (+1.45s | 3.2%) | Metro Area Life Time | 05/02/2026 | 2026 STAC Thank You Mom | |
| 147 | Calvin Higgs | 45.04 | 10 | AA Min | AAA: 43.59 (+1.45s | 3.2%) | Nitro Swimming | 06/11/2026 | 2026 ST NIST George Block Invitational | |
| 148 | Gregory Rucker | 45.05 | 10 | AA Min | AAA: 43.59 (+1.46s | 3.2%) | Firestone Akron Swim Team | 07/23/2026 | 2026 OH LC Junior Championships | |
| 149 | Ryan Clark | 45.07 | 10 | AA Min | AAA: 43.59 (+1.48s | 3.3%) | York Swim Club of Northern Vir | 05/01/2026 | Speedo Spring Splash | |
| 150 | William Huang | 45.08 | 8 | AA Min | AAA: 43.59 (+1.49s | 3.3%) | Charles River Aquatics | 05/08/2026 | 2026 NE CRA MIT Team Specialty LC Meet | |
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.