|Born: April 29, 1984|
|June 27, 2007, for the Chicago Cubs|
|MLB statistics |
(through 2008 season)
|Earned run average||7.45|
On February 13, 2009, Petrick signed with the ThunderBolts for their 2009 season. Petrick appeared in 11 games on the season while recovering from an injury. He went 1-0 with a 2.13 ERA in 12.2 innings, racking up three saves and 15 strikeouts while walking only three.
On April 21, 2010, the Joliet Jack Hammers acquired Petrick, from the ThunderBolts.
On May 15, 2017, Billy signed to play with Pinter’s Pirates of the Mendota Softball League. Petrick’s signing was widely regarded as the best move of the summer.
- Baseball America
- Career statistics and player information from MLB, or ESPN, or Baseball-Reference, or Fangraphs, or The Baseball Cube, or Baseball-Reference (Minors) Warning: Template:Baseballstats cube= parameter should be updated to a numeric value.
- Joliet Jackhammers April 21, 2010 press release.