Kyle Farnsworth will be available out of the bullpen for the final two games of the New York Yankees' three-game weekend series at Detroit.
The relief pitcher on Friday had his suspension reduced from three games to one by Major League Baseball following an appeal.
Bob Watson, vice-president of on-field operations for MLB, announced the original penalty on April 19 after Farnsworth threw a fastball behind the neck of Boston Red Sox slugger Manny Ramirez in a 7-5 loss two nights earlier.
When Ramirez went up to bat in the seventh inning, Farnsworth threw a 97-mile-an-hour pitch behind the outfielder.
Ramirez dropped his bat but never made a move toward the mound.
Farnsworth wasn't ejected and plate umpire Larry Vanover immediately warned both dugouts. Ramirez eventually grounded out and the Red Sox never retaliated.
A day before Farnsworth's close pitch, Red Sox reliever David Aardsma hit Yankees star Alex Rodriguez with a pitch.
John McHale Jr., executive vice-president for administration in the commissioner's office, heard Farnsworth's appeal Tuesday.
Farnsworth was to serve the suspension in Friday's series opener against the Tigers, baseball spokesman Rich Levin said.
On June 26, 2003, Farnsworth — then with the Chicago Cubs — had a three-game suspension reduced to two games without a formal appeal following a brawl with Cincinnati pitcher Paul Wilson.