Gustavo Adolfo Chacin Gonzalez
- Bats Left, Throws Left
- Height 5' 11", Weight 193 lb.
- Debut September 20, 2004
- Final Game September 30, 2010
- Born December 4, 1980 in Maracaibo, Zulia, Venezuela
Gustavo Chacin is unable to grow hair because of the medical condition alopecia areata. His MLB bio states that he is married.
Chacin had a fantastic season in the minors in 2004, with a record of 16-2, 2.86 in 25 starts for the AA New Hampshire Fisher Cats and another 2 wins in as many starts with the AAA Syracuse SkyChiefs. He was named the Eastern League Pitcher of the Year. He made his major league debut late that season, thans was a member of Toronto's starting rotation the following year. He was named to the 2005 Topps All-Star Rookie Team after going 13-9, 3.72 in 34 starts for the Jays in 2005, but his career was derailed by arm woes shortly thereafter.
He was arrested on March 16, 2007 in Tampa, Florida for driving under the influence. Chacin was stopped by Tampa Police at 3:43 a.m. ET and booked on the misdemeanor charge; he was later released on a $500 bond.  He only pitched 5 games for the Blue Jays that year, going 2-1, 5.60.
For the 2008 season with the Dunedin Blue Jays, he went 1-7 in 11 games with an ERA of 7.86. He was signed to a minor league contract by the Washington Nationals on December 23, 2008. He was assigned to their minor league camp on March 2009, before being signed to a minor league contract by the Philadelphia Phillies on April 6th, 2009. He actually pitched pretty well in the Phillies' system, with a combined record of 9-4, 3.20 in 20 games between AA Reading (2 games) and AAA Lehigh Valley (18 games). In 2010, he moved to the Houston Astros' organization and was 1-1, 3.60 in 6 games for the Round Rock Express. That got him a call-up to Houston in early May, and he spent the rest of the season in the Astros' bullpen, making 44 appearances in relief with a record of 2-2, 4.70, but only pitching 38 1/3 innings as he was used mainly as a LOOGY. However, the highlight of his season came with the bat on May 31st; in his only plate appearance of the year, he drove a pitch from Washington's Luis Atilano to the seats in right field in Minute Maid Park for a solo home run. It was also his first major league hit or RBI. He started 2011 with the Oklahoma City RedHawks and made 27 appearances, including 9 starts, going 3-6, 5.13, then was released on July 14th. The New York Mets signed him, but he had an ERA of 12.00 in 15 innings for the Buffalo Bisons the rest of the way.
The Blue Jays created a "Chacin Cologne" giveaway night on June 27, 2006 after a re-occurring skit on the local sports radio station morning show suggested that "Chacin" sounded like a cologne. The fragrance was personally designed by Gustavo Chacin and the two morning show announcers. 
- 2004 Pitcher of the Year Eastern League New Hampshire Fisher Cats
- 2005 Topps All-Star Rookie Team
- 200 Innings Pitched Seasons: 1 (2005)