Home-plate umpire exits after getting hit in mask

OAKLAND -- Home-plate umpire CB Bucknor exited in the second inning of the Red Sox-A's matchup after taking a pitch to his face mask on Friday evening.

Second-base umpire Bill Miller replaced Bucknor behind the plate.

With no outs in the frame, A's right-hander Jarrod Parker threw a pitch that grazed the back of Daniel Nava before hitting Bucknor. He was examined by A's trainer Nick Paparesta for several minutes before departing.