2010 Pan Pacific Swimming Championships – Men's 50 metre backstroke
# 2010 Pan Pacific Swimming Championships – Men's 50 metre backstroke

The men's 50 metre backstroke competition at the 2010 Pan Pacific Swimming Championships took place on August 19 at the William Woollett Jr. Aquatics Center. It was the first appearance of this event in the Pan Pacific Swimming Championships.

## Records

Prior to this competition, the existing world record was as follows:

| World record | Liam Tancock (GBR) | 24.04 | Rome, Italy | August 2, 2009 |
| - | - | - | - | - |

## Results

All times are in minutes and seconds.

| KEY: | q | Fastest non-qualifiers | Q | Qualified | CR | Championships record | NR | National record | PB | Personal best | SB | Seasonal best |
| - | - | - | - | - | - | - | - | - | - | - | - | - |

### Heats

The first round was held on August 19, at 11:39.

| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| - | - | - | - | - | - | - |
| 1 | 1 | 2 | Nick Thoman | United States | 24.82 | QA, CR |
| 2 | 1 | 7 | David Plummer | United States | 24.87 | QA |
| 3 | 2 | 3 | Ryosuke Irie | Japan | 25.20 | QA |
| 3 | 3 | 5 | Ashley Delaney | Australia | 25.20 | QA |
| 5 | 1 | 4 | Junya Koga | Japan | 25.25 | QA |
| 6 | 3 | 3 | Ben Treffers | Australia | 25.26 | QA |
| 7 | 2 | 4 | Daniel Arnamnart | Australia | 25.33 | QA |
| 8 | 2 | 5 | Hayden Stoeckel | Australia | 25.34 | QA |
| 9 | 3 | 4 | Guilherme Guido | Brazil | 25.40 | QB |
| 10 | 3 | 6 | Masafumi Yamaguchi | Japan | 25.46 | QB |
| 11 | 1 | 5 | Gláuber Silva | Brazil | 25.63 | QB |
| 12 | 2 | 6 | Daniel Bell | New Zealand | 25.78 | QB |
| 13 | 2 | 2 | Jake Tapp | Canada | 26.00 | QB |
| 14 | 2 | 7 | Gareth Kean | New Zealand | 26.01 | QB |
| 15 | 3 | 8 | Park Seon-Kwan | South Korea | 26.06 | QB |
| 16 | 3 | 7 | George Bovell | Trinidad and Tobago | 26.31 | QB |
| 17 | 1 | 3 | Federico Grabich | Argentina | 26.36 | |
| 17 | 2 | 1 | Charles Francis | Canada | 26.36 | |
| 19 | 1 | 1 | Matthew Swanston | Canada | 26.53 | |
| 20 | 1 | 6 | Robert Hurley | Australia | 26.68 | |
| 21 | 3 | 1 | Chung Lai-Yeung | Hong Kong | 27.19 | |
| 22 | 3 | 2 | Joaqun Belza | Argentina | 27.44 | |
| - | 2 | 8 | Tobias Oriwol | Canada | DNS | |

### B Final

The B final was held on August 19, at 19:51.

| Rank | Lane | Name | Nationality | Time |
| - | - | - | - | - |
| 9 | 5 | Masafumi Yamaguchi | Japan | 25.34 |
| 10 | 4 | Daniel Arnamnart | Australia | 25.41 |
| 11 | 3 | Daniel Bell | New Zealand | 25.52 |
| 12 | 7 | Park Seon-Kwan | South Korea | 25.83 |
| 13 | 6 | Jake Tapp | Canada | 25.84 |
| 14 | 2 | Gareth Kean | New Zealand | 25.94 |
| 15 | 8 | Charles Francis | Canada | 25.95 |
| 16 | 1 | Federico Grabich | Argentina | 26.10 |

### A Final

The A final was held on August 19, at 19:51.

| Rank | Lane | Name | Nationality | Time |
| - | - | - | - | - |
| | 2 | Junya Koga | Japan | 24.86 |
| | 3 | Ashley Delaney | Australia | 24.98 |
| | 4 | Nick Thoman | United States | 25.02 |
| 4 | 5 | David Plummer | United States | 25.09 |
| 5 | 7 | Ben Treffers | Australia | 25.32 |
| 6 | 6 | Ryosuke Irie | Japan | 25.41 |
| 7 | 8 | Gláuber Silva | Brazil | 25.65 |
| 8 | 1 | Guilherme Guido | Brazil | 25.83 |
