Mark Peter Connor (born May 27, 1949) is an American former pitching coach for the New York Yankees, Baltimore Orioles, Toronto Blue Jays, Arizona Diamondbacks and Texas Rangers.
Connor played two minor league seasons for the Minnesota Twins before his career was ended by an arm injury.
The following season, he posted a 5-2 record with a 3.83 ERA in 32 relief appearances for the Wisconsin Rapids Twins.
He also coached in the major leagues for the New York Yankees (1984–87, 1990–93), Arizona Diamondbacks (1998–2000) and Toronto Blue Jays (2001–02) before joining Texas (2003).
[3] Under his guidance, Randy Johnson earned consecutive NL Cy Young Award honors in 1999 and 2000.