| Name | Pos | Team | Age | DOB | POB | Nationality | Bats | Throws | Height | Weight | Salary | | Mahan, Art | RF | Buffalo Buffaloes | 27 | 11/26/1862 | Buffalo | USA | Left | Right | 5' 10" | 175 lbs | $188 | | Maher, Frank | 3B | Philadelphia Maroons | 30 | 03/15/1860 | Gibbstown | USA | Right | Right | 5' 8" | 150 lbs | $300 | | Manuel, Theo | LF | Boston Brahmins | 24 | 09/23/1866 | Chicago | USA | Right | Right | 5' 10" | 185 lbs | $320 | | McCabe, Frank | SP | Detroit Dynamos | 24 | 06/21/1866 | Philadelphia | USA | Left | Left | 5' 9" | 175 lbs | $200 | | McCann, Hank | SP | Brooklyn Bigsbys | 24 | 08/01/1866 | Louisville | USA | Right | Left | 6' 0" | 155 lbs | $220 | | McCarthy, Clarence | 2B | Baltimore Clippers | 31 | 06/08/1859 | Philadelphia | USA | Right | Right | 5' 3" | 140 lbs | $260 | | McCoy, Ike | RP | Buffalo Buffaloes | 26 | 03/12/1864 | Gloucester | USA | Right | Right | 5' 10" | 170 lbs | $320 | | McDonough, Al | SP | Pittsburgh Hornets | 28 | 09/29/1862 | Brooklyn | USA | Switch | Left | 5' 7" | 165 lbs | $188 | | McElroy, Lou | RP | Boston Brahmins | 25 | 03/12/1865 | Mill Valley | USA | Right | Left | 5' 7" | 160 lbs | $188 | | McGee, Walt | C | New York Imperials | 26 | 03/01/1864 | Unknown | USA | Right | Right | 6' 3" | 175 lbs | $260 | | McRae, Jean | C | New York Imperials | 25 | 01/15/1865 | Hamilton | CAN | Right | Right | 5' 9" | 165 lbs | $230 | | Meehan, David | C | Boston Brahmins | 29 | 08/08/1861 | Philadelphia | USA | Right | Right | 6' 0" | 195 lbs | $430 | | Meier, Elmer | SP | Brooklyn Bigsbys | 24 | 09/29/1866 | Louisville | USA | Right | Right | 5' 10" | 150 lbs | $550 | | Menzies, Oliver | C | Boston Brahmins | 24 | 05/12/1866 | Staunton | USA | Right | Right | 5' 8" | 155 lbs | $550 | | Mercier, Alfred | LF | Philadelphia Maroons | 32 | 05/25/1858 | Springfield | CAN | Right | Right | 6' 1" | 170 lbs | $270 | | Merritt, Walt | SP | Pittsburgh Hornets | 23 | 11/03/1866 | Jacksonville | USA | Right | Right | 5' 10" | 180 lbs | $925 | | Mertens, Charley | 3B | Brooklyn Bigsbys | 25 | 07/04/1865 | St. Louis | USA | Left | Right | 5' 11" | 185 lbs | $600 | | Middleton, Cal | C | New York Imperials | 31 | 10/17/1859 | Solon | USA | Right | Right | 5' 10" | 185 lbs | $800 | | Milson, Jasper | LF | Pittsburgh Hornets | 33 | 08/22/1857 | Montville | USA | Left | Right | 5' 9" | 170 lbs | $260 | | Mitchell, Dan | 2B | New York Imperials | 27 | 01/25/1863 | Elmira | USA | Right | Right | 5' 8" | 165 lbs | $380 | | Mulligan, George | SP | Baltimore Clippers | 26 | 04/17/1864 | Newark | USA | Right | Right | 5' 8" | 170 lbs | $188 | |