The first list contains the known instances of a batter using a doctored bat in a game. The second list contains the known instances of a pitcher throwing a doctored baseball. Many of these players were ejected from the contest.
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Doctored Bats 09/07/1974 Graig Nettles NYA Superballs in bat (single disallowed, not ejected) 07/06/1975 Davey Lopes LAN Pine tar too far up handle (single disallowed, not ejected) 07/19/1975 Thurman Munson NYA Pine tar too far up handle (RBI single disallowed, not ejected) 07/21/1975 Ted Simmons SLN Grooved bat (home run disallowed, not ejected) 08/10/1975 Jerry DaVanon HOU Pine tar too far up handle (called out, not ejected) 08/18/1975 Steve Stone CHN Pine tar too far up handle (single disallowed, not ejected) 08/24/1975 Bill Buckner LAN Grooved bat (called out, RBI single disallowed, not ejected) 09/04/1981 Dan Ford CAL Corked bat (ejected) 04/27/1982 Toby Harrah CLE Doctored bat; cut out some of handle to shorten bat (ejected) 07/24/1983 George Brett KCA Pine tar too far up handle (ejected) 09/01/1987 Billy Hatcher HOU Corked bat (not ejected) 07/15/1994 Albert Belle CLE Corked bat (not ejected) 07/29/1996 Chris Sabo CIN Rubber balls in bat (ejected) 06/01/1997 Wilton Guerrero MON Corked bat (ejected) 06/03/2003 Sammy Sosa CHN Corked bat (ejected) Doctored Baseballs 06/11/1920 Slim Sallee CIN Throwing doctored ball (ejected) 06/14/1922 Sam Jones NYA Throwing cut ball (not ejected) 07/27/1922 Dave Danforth SLA Throwing doctored ball (cover of ball cut, ejected) 08/01/1923 Dave Danforth SLA Throwing doctored ball (discolored. ejected) 08/14/1924 Bob Shawkey NYA Throwing doctored ball (discolored, ejected) 07/20/1944 Nelson Potter SLA Spit ball (ejected) 04/27/1968 Rich Nye (and others) Spit ball (six automatic balls called in game; Durocher ejected) 08/18/1968 Phil Regan CHN Vaseline ball (three ejected in rhubarb; ruled twice in game) 07/14/1978 Don Sutton LAN Scuffed ball (ejected) 09/30/1980 Rick Honeycutt SEA Sandpaper and tack (ejected) 08/23/1982 Gaylord Perry SEA Throwing doctored ball (ejected) 08/03/1987 Joe Niekro MIN Emery board in back pocket (ejected) 08/10/1987 Kevin Gross PHI Sandpaper on glove (ejected) 10/08/1988 Jay Howell LAN Pine tar on glove (NLCS Game 3, ejected) 05/01/1999 Brian Mohler DET Sandpaper on left thumb (ejected) 06/09/1999 Byung-Hyun Kim ARI Heat balm on bandage in sleeve (ejected) 05/17/2003 Zach Day MON Glue on hand (ejected) 08/20/2004 Julian Tavares SLN Pine tar on cap (ejected, 10-day suspension) 06/14/2005 Brendan Donnelly ANA Pine tar on glove (ejected) 10/22/2006 Kenny Rogers DET Foreign substance on heel of pitching hand (World Series, not ejected) 06/19/2012 Joel Peralta TBA Pine tar on glove (ejected before pitching) 04/23/2014 Michael Pineda NYA Pine tar on neck (ejected) 05/21/2015 Will Smith MIL Foreign substance on non-pitching arm (rosin and sunscreen; ejected) 05/23/2015 Brian Matusz BAL Foreign substance on non-pitching arm (ejected)