2010 Pan Pacific Swimming Championships – Men's 100 metre freestyle
The men's 100 metre freestyle competition at the 2010 Pan Pacific Swimming Championships took place on August 19 at the William Woollett Jr. Aquatics Center. The last champion was Brent Hayden of Canada.
This race consisted of two lengths of the pool, both lengths being in freestyle.
Records
Prior to this competition, the existing world and Pan Pacific records were as follows:| World record | 46.91 | Rome, Italy | July 30, 2009 | |
| Pan Pacific Championships record | 48.59 | Victoria, Canada | August 18, 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 19, at 10:16.| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 7 | 5 | Nathan Adrian | 48.41 | QA, CR | |
| 2 | 8 | 7 | Jason Lezak | 48.47 | QA | |
| 3 | 6 | 6 | Brent Hayden | 48.50 | QA | |
| 4 | 7 | 8 | Kyle Richardson | 48.69 | QA | |
| 5 | 8 | 6 | Eamon Sullivan | 48.92 | QA | |
| 6 | 6 | 1 | James Magnussen | 48.95 | QB | |
| 7 | 6 | 4 | Garrett Weber-Gale | 48.98 | QB | |
| 8 | 5 | 5 | Graeme Moore | 48.99 | QA | |
| 9 | 8 | 2 | Cameron Prosser | 49.02 | ||
| 10 | 7 | 4 | Lyndon Ferns | 49.09 | QA | |
| 11 | 8 | 4 | César Cielo | 49.13 | QA | |
| 12 | 8 | 5 | Nicolas Oliveira | 49.20 | QB | |
| 13 | 6 | 5 | Gideon Louw | 49.26 | QB | |
| 14 | 8 | 3 | Tommaso D'Orsogna | 49.36 | ||
| 15 | 4 | 3 | Nicholas Ffrost | 49.42 | ||
| 16 | 4 | 6 | Kenrick Monk | 49.53 | ||
| 17 | 6 | 3 | Takuro Fujii | 49.63 | QB | |
| 18 | 4 | 5 | Ricky Berens | 49.64 | ||
| 19 | 6 | 7 | Henrique Rodrigues | 49.70 | QB | |
| 20 | 3 | 1 | Mitchell Patterson | 49.95 | ||
| 21 | 4 | 2 | Sho Uchida | 50.00 | QB | |
| 22 | 7 | 6 | Brett Fraser | 50.02 | QB | |
| 23 | 5 | 1 | Rammaru Harada | 50.06 | ||
| 24 | 6 | 8 | Cullen Jones | 50.14 | ||
| 25 | 7 | 7 | Bruno Fratus | 50.16 | ||
| 26 | 5 | 3 | Andrew Lauterstein | 50.18 | ||
| 27 | 3 | 4 | George Bovell | 50.20 | ||
| 28 | 4 | 8 | Peter Vanderkaay | 50.22 | ||
| 29 | 4 | 4 | Shunsuke Kuzuhara | 50.23 | ||
| 30 | 3 | 8 | Richard Hortness | 50.25 | ||
| 31 | 3 | 2 | Carl O'Donnell | 50.28 | ||
| 32 | 3 | 6 | Ryan Pini | 50.29 | ||
| 33 | 7 | 3 | Shaune Fraser | 50.43 | ||
| 34 | 2 | 3 | Timothy Phillips | 50.45 | ||
| 35 | 6 | 2 | Nicholas Santos | 50.46 | ||
| 36 | 5 | 4 | Yuki Kobori | 50.49 | ||
| 37 | 5 | 7 | Makoto Ito | 50.50 | ||
| 38 | 5 | 6 | Yoshihiro Okumura | 50.52 | ||
| 39 | 3 | 5 | Leith Brodie | 50.53 | ||
| 40 | 2 | 6 | Luke Peddie | 50.61 | ||
| 41 | 8 | 1 | Rodrigo Castro | 50.68 | ||
| 42 | 3 | 7 | Gláuber Silva | 50.77 | ||
| 42 | 4 | 1 | Hassaan Khalik | 50.77 | ||
| 44 | 5 | 2 | Federico Grabich | 50.79 | ||
| 45 | 3 | 3 | Joaquin Belza | 50.86 | ||
| 46 | 1 | 3 | Park Seon-Kwan | 50.90 | ||
| 47 | 2 | 2 | Chris Wright | 50.92 | ||
| 48 | 1 | 4 | Joonmo Bae | 50.97 | ||
| 49 | 7 | 1 | Fernando Silva | 51.00 | ||
| 50 | 2 | 5 | Blake Worsley | 51.07 | ||
| 50 | 7 | 2 | Roland Schoeman | 51.07 | ||
| 52 | 4 | 7 | Minkyu Park | 51.24 | ||
| 53 | 2 | 4 | Sebastian Jahnsen | 52.10 | ||
| 54 | 2 | 7 | Nicholas Tan | 52.12 | ||
| 55 | 2 | 1 | Chun Yin Kong | 52.89 | ||
| 56 | 1 | 5 | Ho Chun Yan | 52.89 | ||
| - | 5 | 8 | Masayuki Kishida | DNS | ||
| - | 8 | 8 | Colin Russell | DNS |
B Final
The B final was held on August 19, at 18:16.| Rank | Lane | Name | Nationality | Time | Notes |
| 9 | 5 | Garrett Weber-Gale | 48.73 | ||
| 10 | 4 | James Magnussen | 48.94 | ||
| 11 | 6 | Gideon Louw | 49.13 | ||
| 12 | 3 | Nicolas Oliveira | 49.36 | ||
| 13 | 2 | Takuro Fujii | 49.90 | ||
| 14 | 7 | Henrique Rodrigues | 49.91 | ||
| 15 | 1 | Sho Uchida | 49.98 | ||
| 16 | 8 | Brett Fraser | 50.29 |
A Final
The A final was held on August 19, at 18:16.| Rank | Lane | Name | Nationality | Time | Notes |
| 4 | Nathan Adrian | 48.15 | CR | ||
| 3 | Brent Hayden | 48.19 | |||
| 8 | César Cielo | 48.48 | |||
| 4 | 5 | Jason Lezak | 48.57 | ||
| 5 | 7 | Graeme Moore | 48.76 | ||
| 6 | 6 | Kyle Richardson | 48.81 | ||
| 7 | 2 | Eamon Sullivan | 48.84 | ||
| 8 | 1 | Lyndon Ferns | 49.46 |