| MLB games with starters (or pitchers of decision) whose last names were one letter off. |
| When Shawn Chacon of the Yankees faced off against Gustavo Chacin of the Blue Jays on August 25, 2005, some wondered how often this had occurred in the past. I took a look at the data on Retrosheet (which is not complete for all games in all years) and came up with the following (through October 2006). |
| Date | Home Team | Home Starter | Visiting Team | Visiting Starter | Winning Pitcher | Losing Pitcher |
|---|---|---|---|---|---|---|
| 07/13/1884 | PT1 | Jack Neagle | LS2 | Ren Deagle | ||
| 09/02/1896 | LS3 | Art Herman | WSN | Les German | ||
| 06/06/1898 | SLN | Jim Hughey | BLN | Jim Hughes | ||
| 07/02/1900 | BRO | Harry Howell | SLN | Jack Powell | ||
| 09/30/1900 | SLN | Jim Hughey | CHN | Tom Hughes | ||
| 07/15/1902 | SLA | Jack Powell | BLA | Harry Howell | ||
| 09/23/1903 | SLA | Jack Powell | NYA | Harry Howell | ||
| 06/19/1904 | NYA | Jack Powell | SLA | Harry Howell | ||
| 08/14/1904 | NYA | Jack Powell | SLA | Harry Howell | ||
| 05/16/1905 | NYA | Jack Powell | SLA | Harry Howell | ||
| 05/19/1905 | NYA | Jack Powell | SLA | Harry Howell | ||
| 07/16/1906 | SLA | Fred Glade | BOS | Ralpy Glaze | ||
| 05/03/1918 | WS1 | Doc Ayers | PHA | Elmer Myers | ||
| 08/18/1920 | DET | Doc Ayers | BOS | Elmer Myers | Elmer Myers | |
| 06/23/1952 | NYA | Johnny Sain | SLA | Bob Cain | Joe Ostrowski | |
| 08/17/1952 | CIN | Frank Hiller | SLN | Stu Miller | Stu Miller | |
| 08/26/1952 | SLA | Bob Cain | NYA | Johnny Sain | Bob Kuzava | |
| 05/30/1953 | BOS | Willard Nixon | WS1 | Sonny Dixon | Sonny Dixon | |
| 09/11/1960 | NYA | Ralph Terry | CLE | Jim Perry | Ralph Terry | Jim Perry |
| 04/29/1961 | CLE | Jim Perry | NYA | Ralph Terry | Ralph Terry | Jim Perry |
| 08/20/1961 | NYA | Ralph Terry | CLE | Jim Perry | Ralph Terry | Jim Perry |
| 06/29/1967 | SFN | Joe Gibbon | SLN | Bob Gibson | Bobby Bolin | Bob Gibson |
| 05/10/1975 | CHA | Wilbur Wood | CLE | Don Hood | Wilbur Wood | Don Hood |
| 05/23/1976 | DET | Vern Ruhle | BAL | Ken Holtzman | John Hiller | Dyar Miller |
| 05/18/1982 | OAK | Mike Norris | DET | Jack Morris | Pat Underwood | Dave Beard |
| 06/06/1982 | SEA | Gaylord Perry | DET | Dan Petry | Dan Petry | Gaylord Perry |
| 08/18/1982 | SEA | Gaylord Perry | DET | Dan Petry | Dan Petry | Gaylord Perry |
| 07/22/1989 | CHA | Richard Dotson | BOS | John Dopson | Ken Patterson | Rob Murphy |
| 06/16/1990 | TOR | Willie Blair | NYA | Andy Hawkins | Frank Wills | Alan Mills |
| 07/15/1996 | HOU | Donne Wall | FLO | Pat Rapp | Donn Pall | Donne Wall |
| 09/02/1997 | DET | Greg Keagle | ATL | Denny Neagle | Denny Neagle | Greg Keagle |
| 04/03/2000 | SFN | Livan Hernandez | FLO | Alex Fernandez | Alex Fernandez | Livan Hernandez |
| 08/09/2003 | MON | Livan Hernandez | HOU | Jared Fernandez | Livan Hernandez | Jared Fernandez |
| 06/02/2004 | HOU | Roger Clemens | CHN | Matt Clement | Roger Clemens | Matt Clement |
| 06/30/2004 | HOU | Roger Clemens | CHN | Matt Clement | Brad Lidge | LaTroy Hawkins |
| 08/25/2005 | NYA | Shawn Chacon | TOR | Gustavo Chacin | Shawn Chacon | Gustavo Chacin |
| 09/17/2005 | TOR | Gustavo Chacin | NYA | Shawn Chacon | Shawn Chacon | Gustavo Chacin |