2010 Pan Pacific Swimming Championships – Men's 100 metre backstroke
The men's 100 metre backstroke competition at the 2010 Pan Pacific Swimming Championships took place on August 18 at the William Woollett Jr. Aquatics Center. The last champion was Aaron Peirsol of US.
This race consisted of two lengths of the pool, all in backstroke.
Records
Prior to this competition, the existing world and Pan Pacific records were as follows:| World record | 51.94 | Indianapolis, United States | July 8, 2009 | |
| Pan Pacific Championships record | 53.32 | Victoria, Canada | August 17, 2006 |
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 18, at 10:59.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 5 | David Plummer | 53.33 | QA | |
| 2 | 4 | 7 | Ryan Lochte | 53.69 | QA | |
| 3 | 4 | 4 | Ashley Delaney | 53.78 | QA | |
| 4 | 4 | 3 | Aaron Peirsol | 53.85 | QA | |
| 5 | 3 | 3 | Nick Thoman | 53.96 | QA | |
| 6 | 3 | 5 | Hayden Stoeckel | 54.05 | QA | |
| 7 | 2 | 5 | Ryosuke Irie | 54.18 | QA | |
| 8 | 2 | 4 | Junya Koga | 54.39 | QA | |
| 9 | 3 | 4 | Guilherme Guido | 54.79 | QB | |
| 9 | 3 | 2 | Masafumi Yamaguchi | 54.79 | QB | |
| 11 | 2 | 4 | Daniel Arnamnart | 54.81 | QB | |
| 12 | 2 | 1 | Gareth Kean | 55.00 | QB | |
| 13 | 2 | 7 | Ben Treffers | 55.02 | QB | |
| 14 | 2 | 3 | George Du Rand | 55.08 | QB | |
| 15 | 4 | 2 | Gabriel Mangabeira | 55.15 | QB | |
| 16 | 4 | 1 | Jake Tapp | 55.31 | QB | |
| 17 | 3 | 6 | Daniel Bell | 55.32 | ||
| 18 | 3 | 1 | Tobias Oriwol | 55.37 | ||
| 19 | 4 | 8 | Kuninori Tada | 55.60 | ||
| 20 | 3 | 8 | Matt Hawes | 55.65 | ||
| 21 | 3 | 7 | Charles Francis | 55.73 | ||
| 22 | 2 | 2 | Park Seon-Kwan | 56.01 | ||
| 23 | 2 | 8 | Matthew Swanston | 56.34 | ||
| 24 | 4 | 6 | Federico Grabich | 56.38 | ||
| 25 | 1 | 5 | Andrew Ford | 57.05 | ||
| 26 | 1 | 4 | Nicholas Sinclair | 57.58 | ||
| 27 | 1 | 3 | Chung Lai-Yeung | 59.95 |
B Final
The B final was held on August 18, at 19:18.| Rank | Lane | Name | Nationality | Time | Notes |
| 9 | 4 | Nick Thoman | 53.66 | ||
| 10 | 5 | Masafumi Yamaguchi | 54.98 | ||
| 11 | 8 | Tobias Oriwol | 55.34 | ||
| 12 | 6 | George Du Rand | 55.36 | ||
| 13 | 1 | Daniel Bell | 55.37 | ||
| 14 | 7 | Jake Tapp | 55.47 | ||
| 15 | 2 | Gabriel Mangabeira | 56.01 | ||
| 16 | 3 | Daniel Arnamnart | 56.08 |
A Final
The A final was held on August 18, at 19:18.| Rank | Lane | Name | Nationality | Time | Notes |
| 3 | Aaron Peirsol | 53.31 | CR | ||
| 7 | Junya Koga | 53.63 | |||
| 5 | Ashley Delaney | 53.67 | |||
| 4 | 2 | Ryosuke Irie | 53.71 | ||
| 5 | 4 | David Plummer | 53.80 | ||
| 6 | 6 | Hayden Stoeckel | 54.06 | ||
| 7 | 8 | Gareth Kean | 54.57 | ||
| 8 | 1 | Guilherme Guido | 55.05 |