| Most Appearances | Most Starts | Most IP |
|---|---|---|
| 12 - Urbina, Ugueth (2003 Oakland A-Sox) in month AUG 12 - Gordon, Tom (2006 Oakland A-Sox) in month SEP 12 - Bell, Heath (2010 Cleveland Green Badgers) in month JUL 12 - Fuentes, Brian (2006 Houston Quirks) in month JUL 12 - Gregg, Kevin (2010 Colorado Monkies) in month JUL 12 - Lowe, Mark (2010 Colorado Monkies) in month AUG 12 - Kline, Steve (2005 Oakland A-Sox) in month SEP 12 - Accardo, Jeremy (2008 Washington Green Badgers) in month APR 12 - Lawrence, Brian (2003 Cleveland Quirks) in month APR 12 - Otsuka, Akinori (2007 San Diego Zoo) in month SEP | 6 - Halladay, Roy (2003 Cleveland Quirks) in month MAY 5 - 96 way TIE | 44.0 - Johnson, Randy (2003 Baltimore Orioles) in month APR 40.1 - Byrd, Paul (2006 Atlanta Braves) in month AUG 40.0 - Bedard, Erik (2007 Baltimore Orioles) in month JUL 39.2 - Hudson, Tim (2003 Florida Marlins) in month SEP 39.1 - Santana, Ervin (2009 Colorado Monkies) in month AUG 38.1 - Halladay, Roy (2004 Cleveland Quirks) in month APR 38.1 - Oswalt, Roy (2006 New York Yankees) in month JUL 38.0 - Willis, Dontrelle (2008 Florida Marlins) in month SEP 38.0 - Maddux, Greg (2003 Baltimore Orioles) in month JUN 37.2 - Weaver, Jeff (2005 Minnesota Twinkies) in month JUL |
| Lowest ERA | Highest ERA | Most Hits Allowed |
| 0.00 - Martinez, Pedro (2004 Florida Marlins) in month JUL 0.00 - Santana, Johan (2003 Seattle Slews) in month APR 0.28 - Zambrano, Carlos (2006 Seattle Slews) in month JUN 0.31 - Prior, Mark (2004 Cleveland Quirks) in month JUN 0.33 - Wolf, Randy (2004 Atlanta Braves) in month AUG 0.33 - Burnett, AJ (2006 Florida Marlins) in month JUN 0.40 - Burnett, AJ (2008 Florida Marlins) in month AUG 0.41 - Martinez, Pedro (2003 Florida Marlins) in month AUG 0.42 - Matsuzaka, Daisuke (2009 Minnesota Fire) in month APR 0.47 - Penny, Brad (2006 Minnesota Twinkies) in month JUL | 15.43 - Carmona, Fausto (2008 Kansas City Royals) in month AUG 15.00 - Mulder, Mark (2007 New York Yankees) in month JUL 14.91 - Adams, Terry (2003 Pittsburgh Pirates) in month AUG 14.45 - Bedard, Erik (2005 Baltimore Orioles) in month SEP 14.26 - Johnson, Jason (2004 Baltimore Orioles) in month SEP 14.19 - Carpenter, Chris (2005 Baltimore Orioles) in month JUN 14.09 - Pettitte, Andy (2007 Pittsburgh Pirates) in month JUN 14.02 - Hernandez, Livan (2007 Atlanta Braves) in month MAY 13.74 - Wells, Randy (2010 Baltimore Orioles) in month MAY 13.05 - Perez, Odalis (2004 Philadelphia Phillies) in month APR | 69 - Capuano, Chris (2007 Kansas City Royals) in month APR 59 - Meche, Gil (2009 Colorado Monkies) in month AUG 58 - Penny, Brad (2004 Houston Colt 45s) in month AUG 56 - Willis, Dontrelle (2006 Florida Marlins) in month SEP 55 - Weaver, Jeff (2005 Minnesota Twinkies) in month JUL 54 - Bedard, Erik (2005 Baltimore Orioles) in month SEP 54 - Lowe, Derek (2006 Minnesota Twinkies) in month JUL 53 - Escobar, Kelvim (2008 Atlanta Braves) in month JUL 53 - Pettitte, Andy (2007 Pittsburgh Pirates) in month JUN 52 - Zito, Barry (2010 Philadelphia Phillies) in month MAY |
| Most Wins | Most Losses | Most Saves |
| 5 - Harang, Aaron (2008 Washington Green Badgers) in month AUG 4 - 49 way TIE | 4 - 42 way TIE | 9 - Nathan, Joe (2006 Houston Quirks) in month SEP 8 - Capps, Matt (2009 Pittsburgh Pirates) in month APR 8 - Rivera, Mariano (2007 San Diego Zoo) in month SEP 8 - Gregg, Kevin (2009 Toronto Quirks) in month JUN 7 - Nathan, Joe (2008 Houston Quirks) in month SEP 7 - Kolb, Danny (2005 San Francisco Giants) in month JUN 7 - Broxton, Jonathan (2010 Pittsburgh Pirates) in month JUN 7 - Isringhausen, Jason (2008 Washington Green Badgers) in month APR 7 - Rivera, Mariano (2004 San Diego Zoo) in month SEP 7 - Isringhausen, Jason (2006 Atlanta Braves) in month MAY 7 - Rivera, Mariano (2006 San Diego Zoo) in month SEP 7 - Rivera, Mariano (2009 San Diego Zoo) in month JUN 7 - Hoffman, Trevor (2007 Oakland A-Sox) in month AUG 7 - Rivera, Mariano (2010 San Diego Zoo) in month APR 7 - Smoltz, John (2004 Seattle Slews) in month SEP |
| Most Complete Games | Most Shutouts | Most Runs Allowed |
| 4 - Johnson, Randy (2003 Baltimore Orioles) in month APR 4 - Hudson, Tim (2005 Florida Marlins) in month AUG 4 - Johnson, Randy (2005 Seattle Slews) in month AUG 4 - Hudson, Tim (2004 Florida Marlins) in month APR 4 - Willis, Dontrelle (2008 Florida Marlins) in month SEP 4 - Pineiro, Joel (2003 Philadelphia Phillies) in month MAY 3 - 61 way TIE | 2 - Clement, Matt (2005 San Francisco Giants) in month JUL 2 - Wolf, Randy (2004 Atlanta Braves) in month AUG 2 - Verlander, Justin (2008 Oakland A-Sox) in month JUN 2 - Johnson, Randy (2005 Seattle Slews) in month SEP 2 - Johnson, Randy (2005 Seattle Slews) in month AUG 2 - Prior, Mark (2006 Houston Quirks) in month AUG 2 - Smoltz, John (2006 Seattle Slews) in month APR 2 - Jackson, Edwin (2010 Florida Marlins) in month APR 2 - Buehrle, Mark (2008 Atlanta Braves) in month MAY 2 - Burnett, AJ (2006 Florida Marlins) in month JUN 2 - Nolasco, Ricky (2009 Minnesota Fire) in month APR | 50 - Capuano, Chris (2007 Kansas City Royals) in month APR 44 - Adams, Terry (2003 Pittsburgh Pirates) in month AUG 41 - Meche, Gil (2009 Colorado Monkies) in month AUG 41 - Carpenter, Chris (2005 Baltimore Orioles) in month JUN 40 - Penny, Brad (2004 Houston Colt 45s) in month AUG 39 - Zito, Barry (2010 Philadelphia Phillies) in month MAY 38 - Lowe, Derek (2008 Boston Revolution) in month MAY 38 - Bedard, Erik (2005 Baltimore Orioles) in month SEP 38 - Lowe, Derek (2006 Minnesota Twinkies) in month JUL 37 - Buehrle, Mark (2008 Atlanta Braves) in month JUL |
| Most Strikeouts | Most Walks | Most Hit Batsmen |
| 51 - Johnson, Randy (2003 Baltimore Orioles) in month APR 50 - Johnson, Randy (2005 Seattle Slews) in month AUG 48 - Harden, Rich (2009 Toronto Quirks) in month SEP 44 - Sheets, Ben (2005 Florida Marlins) in month JUN 44 - Schilling, Curt (2003 Toronto Blue Jays) in month APR 43 - Johnson, Randy (2003 Baltimore Orioles) in month MAY 43 - Lincecum, Tim (2009 San Francisco Giants) in month APR 42 - Johnson, Randy (2005 Seattle Slews) in month APR 41 - Lincecum, Tim (2010 San Francisco Giants) in month APR 41 - Verlander, Justin (2010 Oakland A-Sox) in month APR 41 - Schilling, Curt (2003 Toronto Blue Jays) in month SEP 41 - Johnson, Randy (2005 Seattle Slews) in month SEP 41 - Schmidt, Jason (2005 San Francisco Giants) in month APR | 28 - Zambrano, Carlos (2007 Tampa Bay Phenom) in month MAY 28 - Zambrano, Carlos (2008 Tampa Bay Phenom) in month JUL 24 - Burnett, AJ (2003 Florida Marlins) in month AUG 24 - Willis, Dontrelle (2008 Florida Marlins) in month SEP 24 - Zambrano, Carlos (2007 Tampa Bay Phenom) in month SEP 24 - Trachsel, Steve (2003 Houston Colt 45s) in month JUL 24 - Nomo, Hideo (2004 Anaheim Angels) in month JUL 23 - Perez, Oliver (2004 Seattle Slews) in month AUG 23 - Burnett, AJ (2008 Florida Marlins) in month MAY 23 - Cabrera, Daniel (2007 Baltimore Orioles) in month SEP | 6 - Maholm, Paul (2007 Pittsburgh Pirates) in month APR 6 - Greinke, Zack (2009 Tampa Bay Phenom) in month SEP 6 - Glavine, Tom (2005 Atlanta Braves) in month JUL 6 - Nolasco, Ricky (2009 Minnesota Fire) in month JUN 6 - Willis, Dontrelle (2006 Florida Marlins) in month JUL 5 - 13 way TIE |
| Most Balks | Most Wild Pitches | Most Home Runs |
| 3 - Tejeda, Robinson (2010 Baltimore Orioles) in month SEP 3 - Bedard, Erik (2005 Baltimore Orioles) in month SEP 2 - 27 way TIE | 10 - Stammen, Craig (2010 Pittsburgh Pirates) in month MAY 8 - Zambrano, Victor (2004 Baltimore Orioles) in month AUG 6 - Armas, Tony (2003 San Francisco Giants) in month SEP 6 - Davies, Kyle (2009 Pittsburgh Pirates) in month JUN 6 - Contreras, Jose (2005 New York Yankees) in month JUN 6 - Cabrera, Daniel (2007 Baltimore Orioles) in month SEP 6 - McGowan, Dustin (2008 Florida Marlins) in month JUL 6 - Kazmir, Scott (2010 Cleveland Green Badgers) in month JUN 5 - 21 way TIE | 12 - Bush, Dave (2009 Philadelphia Phillies) in month MAY 12 - Lawrence, Brian (2004 Baltimore Orioles) in month APR 11 - Wang, ChienMing (2007 New York Yankees) in month APR 11 - Kuroda, Hiroki (2009 Cleveland Green Badgers) in month AUG 10 - Bonderman, Jeremy (2007 New York Yankees) in month AUG 10 - Kazmir, Scott (2009 Cleveland Green Badgers) in month JUL 10 - Carpenter, Chris (2005 Baltimore Orioles) in month JUN 10 - Harang, Aaron (2007 Washington Green Badgers) in month AUG 10 - May, Darrell (2004 Toronto Blue Jays) in month JUN 10 - Vazquez, Javier (2003 Florida Marlins) in month AUG 10 - Buehrle, Mark (2009 Atlanta Braves) in month JUN 10 - Vazquez, Javier (2006 San Diego Zoo) in month SEP 10 - Peavy, Jake (2004 San Diego Zoo) in month APR 10 - Maddux, Greg (2005 Oakland A-Sox) in month JUL |