Xue

Tim Kurkjian writes a chapter about ambidexterity in his book Is This a Great Game, or What?. I have not read it, but read reviews on it and he mentions there have been four ambidextrous pitchers in MLB history. In addition, Victor Martinez can throw 75 MPH left-handed.

That video is old.

He has to declare which arm to use before the at-bat begins and cannot change until the next hitter.

He only throws high 80's righty and high 70's lefty.