# 1999 Pan Pacific Swimming Championships – Men's 100 metre backstroke

The men's 100 metre backstroke competition at the 1999 Pan Pacific Swimming Championships took place on August 23–24 at the Sydney International Aquatic Centre. The last champion was Lenny Krayzelburg 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 | Jeff Rouse (USA) | 53.86 | Barcelona, Spain | July 31, 1992 |
| Pan Pacific Championships record | Lenny Krayzelburg (USA) | 54.43 | Fukuoka, Japan | August 10, 1997 |

## 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 23.
| Rank | Name | Nationality | Time | Notes |
| 1 | Lenny Krayzelburg | United States | 54.80 | Q |
| 2 | Atsushi Nishikori | Japan | 55.92 | Q |
| 3 | Keitaro Konnai | Japan | 56.07 | Q |
| 3 | Josh Watson | Australia | 56.07 | Q |
| 5 | Robert Brewer | United States | 56.09 | Q |
| 6 | Matt Welsh | Australia | 56.17 | Q |
| 7 | Mark Versfeld | Canada | 56.25 | Q |
| 8 | Brad Bridgewater | United States | 56.40 | Q |
| 9 | Ray Hass | Australia | 56.42 | Q |
| 10 | Dustin Hersee | Canada | 56.50 | Q |
| 11 | Neil Walker | United States | 56.51 | Q |
| 12 | Chris Renaud | Canada | 56.82 | Q |
| 13 | Simon Thirsk | South Africa | 56.96 | Q |
| 14 | Alex Lim | Malaysia | 57.02 | Q |
| 15 | Cameron Delaney | Australia | 57.31 | Q |
| 16 | Greg Hamm | Canada | 57.43 | Q |
| 17 | Naoya Sonoda | Japan | 57.69 | |
| 18 | Robert van der Zant | Australia | 57.90 | |
| 19 | Scott Miller | Australia | 58.02 | |
| 20 | Geoff Huegill | Australia | 58.22 | |
| 21 | Greg Main-Baillie | South Africa | 58.48 | |
| 22 | Scott Talbot-Cameron | New Zealand | 58.79 | |
| 23 | Torin Hay | New Zealand | 58.82 | |

### Semifinals

The semifinals were held on August 23.
| Rank | Name | Nationality | Time | Notes |
| 1 | Lenny Krayzelburg | United States | 54.07 | Q, CR |
| 2 | Matt Welsh | Australia | 55.42 | Q |
| 3 | Robert Brewer | United States | 55.56 | Q |
| 4 | Atsushi Nishikori | Japan | 55.58 | Q |
| 5 | Keitaro Konnai | Japan | 55.70 | Q |
| 6 | Mark Versfeld | Canada | 55.83 | Q |
| 7 | Josh Watson | Australia | 55.84 | Q |
| 8 | Brad Bridgewater | United States | 56.07 | Q |
| 9 | Ray Hass | Australia | 56.15 | |
| 10 | Neil Walker | United States | 56.16 | |
| 11 | Chris Renaud | Canada | 56.40 | |
| 12 | Cameron Delaney | Australia | 56.48 | |
| 13 | Dustin Hersee | Canada | 56.52 | |
| 14 | Simon Thirsk | South Africa | 56.64 | |
| 15 | Alex Lim | Malaysia | 57.17 | |
| 16 | Greg Hamm | Canada | 57.57 | |

### Final

The final was held on August 24.
| Rank | Lane | Nationality | Time | Notes |
| | Lenny Krayzelburg | United States | 53.60 | WR |
| | Matt Welsh | Australia | 55.13 | |
| | Josh Watson | Australia | 55.18 | |
| 4 | Robert Brewer | United States | 55.39 | |
| 5 | Atsushi Nishikori | Japan | 55.61 | |
| 6 | Keitaro Konnai | Japan | 55.62 | |
| 7 | Mark Versfeld | Canada | 55.82 | |
| 8 | Chris Renaud | Canada | 55.87 | |