1939–1946 Barney Olsen, OF, 1941 Mike Olt, 3B, 2014–2015 Steve Ontiveros, 3B, 1977–1980 Rey Ordóñez, SS, 2004 Kevin Orie, 3B, 1997–1998, 2002 José Ortiz, OF, 1971 Ramón Ortiz, P, 2011 Bob Osborn, P, 1925–1930 Tiny Osborne, P, 1922–1924 Donovan Osborne, P,2002 Josh Osich, P, 2020 Johnny Ostrowski, OF, 1943–1946 Reggie Otero, 1B, 1945 Billy Ott, OF, 1962–1964 Dave Otto, P, 1994 Orval Overall, P, 1906–1913 Ernie Ovitz, P, 1911 Mickey Owen, C, 1949–1951 Dave Owen, SS, 1983–1985 P Gene Packard, P, 1916–1917 Andy Pafko, OF, 1943–1951 Ángel Pagán, OF, 2006–2007 Vance Page, P, 1938–1941 Karl Pagel, 1B, 1978–1979 Donn Pall, P, 1994 Rafael Palmeiro, 1B, 1986–1988 Milt Pappas, P, 1970–1973 Erik Pappas, C, 1991 Mark Parent, C, 1994–1995 Blake Parker, P, 2012–2014 Doc Parker, P, 1893–1896 Roy Parmelee, P, 1937 Jiggs Parrott, 3B, 1892–1895 Tom Parrott, OF, 1893 Dode Paskert, OF, 1918–1920 Claude Passeau, P, 1939–1947 Reggie Patterson, P, 1983–1985 Bob Patterson, P, 1996–1998 Corey Patterson, OF, 2000–2005 Eric Patterson, OF, 2007–2008 Ken Patterson, P, 1992 David Patton, P, 2009 Spencer Patton, P, 2016 Josh Paul, C, 2003 Mike Paul, P, 1973, 1974 Dave Pavlas, P, 1990–1991 Ted Pawelek, C, 1946 George Pearce, P, 1912–1916 Charlie Pechous, 3B, 1916–1917 Jorge Pedre, C, 1992 Chick Pedroes, OF, 1902 Carlos Peña, 1B, 2011 Félix Peña, P, 2016-2017 Roberto Peña, SS, 1965–1966 Ken Penner, P, 1929 Joe Pepitone, 1B, 1970–1973 Joel Peralta, P, 2016 Hernán Pérez, IF, 2020 Mike Pérez, P, 1995–1996 Neifi Pérez, SS, 2004–2006 Yorkis Pérez, P, 1991 Harry Perkowski, P, 1955 Jon Perlman, P, 1985 Scott Perry, P, 1916 Pat Perry, P, 1988, 1989 John Peters, SS, 1874–1879 Billy Petrick, P, 2007 Bob Pettit, OF, 1887–1888 Jesse Petty, P, 1930 Big Jeff Pfeffer, P, 1905, 1910 Fred Pfeffer, 2B, 1883–1889, 1891, 1896–1897 Jack Pfiester, P, 1906–1911 Josh Phegley, C, 2020 Art Phelan, 3B, 1913–1915 Babe Phelps, C, 1933–1934 David Phelps, P, 2019 Taylor Phillips, P, 1958–1959 Adolfo Phillips, OF, 1966–1969 Tom Phoebus, P, 1972 Bill Phyle, P, 1898–1899 Charlie Pick, 2B, 1918, 1919 Eddie Pick, 3B, 1927 Jeff Pico, P, 1988–1990 Félix Pie, OF, 2007-2008 Ray Pierce, P, 1924 Andy Piercy, 2B, 1881 Bill Piercy, P, 1926 Juan Pierre, CF, 2005–2006 Carmen Pignatiello, P, 2007 George Piktuzis, P, 1956 Horacio Piña, P, 1974 Marc Pisciotta, P, 1997–1999 Pinky Pittenger, SS, 1925 Juan Pizarro, P, 1970–1973 Whitey Platt, OF, 1942–1943 Dan Plesac, P, 1992–1994 Bill Plummer, C, 1968 Tom Poholsky, P,