Without wearing a fielder's glove, Louisville hurler Tony Mullane pitches with both arms in an American Association game against the Orioles. The natural right-hander's ambidextrous efforts are to little avail when the home team defeats the Eclipse at Baltimore's Newington Park.
June 16, 1884
Due to inflammation in his right index finger, Larry Corcoran of the White Stockings (Cubs) pitches left-handed and right-handed in a game against the Bisons. The natural right-hander hurls ambidextrously for four innings, alternating throwing arms, before moving to shortstop in Chicago's 20-9 loss at Buffalo's Olympic Park.
July 23, 1928
In a Class C Western Association game, future major league player and manager Paul Richards of the Muskogee Chiefs uses both hands when summoned from his shortstop position to pitch in his brief appearance on the mound. An unusual confrontation with a switch-hitter briefly results in both the pitcher and the batter continually swapping hands and batter's boxes, respectively, until the ambidextrous hurler becomes a left-hander and right-hander on alternate pitches, regardless of where the hitter places himself.
September 28, 1995
Greg Harris becomes the first post-1900 major leaguer to pitch ambidextrously. In his ninth-inning appearance, the Expos reliever blanks the Reds, facing four batters, two as a right-hander, his natural side, and the other two as a southpaw.
June 19, 2008
At KeySpan Park, 22-year-old Staten Island Yankee ambidextrous hurler Pat Venditte Jr. pitches a scoreless ninth inning in his first minor league appearance, including striking out a frustrated Ralph Henriquez to end the game. After delaying the game to adjust his shin guard each time he changes batter boxes, the umpiring crew tells the Brooklyn Cyclones switch-hitter to select from which side of the plate he intends to hit, then tells the pitcher to declare which arm he will use to pitch.
June 5, 2015
Pat Venditte becomes the first full-time switch-pitcher in the modern era when he tosses two scoreless frames in Oakland's 4-2 loss to the Red Sox at Fenway Park. The A's ambidextrous reliever faces the minimum six batters in his two innings, allowing a single to Hanley Ramirez before getting an inning-ending double play in the seventh, and then proceeds to pitch a perfect eighth.