Went through all the "Docs" I could think of, but can not think who you might be referring to unless you are referring to Halladay:
Doc Adams (1814-1899), American baseball player and executive
Darrel Baldock (1938-2011), Australian rules football player and coach and politician nicknamed "The Doc"
Doc Baker (died c. early 1920s), African-American football player
Doc Blanchard (1924–2009), American football player and fighter pilot
Doc Casey (1870-1936), American Major League Baseball player and manager
Matthew Clarke (Australian rules footballer) (born 1973), retired
Doc Cook (baseball) (1886-1973), American Major League Baseball player
L. J. Cooke (1868-1943), American college men's basketball coach
Doc Crandall (1887-1951), American Major League Baseball player, the first used consistently as a relief pitcher
Donald Dann (1949-2005), Australian Paralympic athlete
Seán Doherty (Gaelic footballer) (born 1947), Irish former Gaelic football manager and player
Ed Dougherty (born 1947), American golfer
Doc Edwards (born 1936), American Major League Baseball player
Mike Emrick (born 1946), American hockey broadcaster
Doc Gautreau (1901-1970), American Major League Baseball player and manager
Doc Gessler (1880-1924), American Major League Baseball player
Roy Halladay (born 1977), American Major League Baseball pitcher
Dick Hoblitzel (1888-1962), American Major League Baseball player
Arthur Irwin (1858-1921), Canadian-American Major League Baseball player and manager
Jack Kearns (1882-1963), American boxing manager, most notably for Jack Dempsey
Doc Lawson (born 1958), American soccer player
Walter Meanwell (1884-1953), college men's basketball coach
Doc Medich (born 1948), American baseball player
Cary Middlecoff (1921-1998), American golfer and dentist
Donald Minnegan (1902–2002), former coach and athletic director at Towson University
Gil Morgan (born 1946), American golfer
Harold Nicholls (1897-1977), New Zealand rugby football player
Danell Nicholson (born 1967), American former boxer
Donncha O'Callaghan (born 1979), Irish rugby union footballer
Derek Pace (1932-1989), English footballer
Doc Powers (1870-1909), American Major League Baseball player and physician
Doc Prothro (1893-1971), American Major League Baseball player and manager and dentist
Ross Reynolds (1887-1970), American Major League Baseball pitcher
Doc Rivers (born 1961), American National Basketball Association player and coach
Doc Wise (born 1967), American football player
Johnny Rutherford (baseball) (born 1925), Canadian former Major League Baseball pitcher
Harry Sage (1864-1947), American Major League Baseball player
Homer Smoot (1878-1928), American Major League Baseball player
Gary Wiggins (1952-2008), Australian cyclist nicknamed "The Doc"
Nope. No "Doc" and "Met" combo there....
Baseball is a slow, boring, complex, cerebral game that doesn't lend itself to histrionics. You 'take in' a baseball game, something odd to say about a football or basketball game, with the clock running and the bodies flying.
Charles Krauthammer