He was the third base umpire on April 20, 1986, when Roger Clemens became the first pitcher to strike out 20 batters in a nine-inning game.
[1][2] McCoy was also the first base umpire for David Cone's perfect game on July 18, 1999.
He was the plate umpire for the Ten Cent Beer Night held by the Cleveland Indians on June 4, 1974, that ended in a forfeit win for the Texas Rangers.
[3] He was also the home plate umpire in Phil Niekro's 300th career win in Toronto on October 6, 1985.
Through 1974, all AL umpires were required to use the outside chest protector, while the NL had adopted the inside chest protector for decades under the leadership of Hall of Fame umpire Bill Klem.