The correct spelling is ambidextrous
(of a person) able to use the right and left hands equally well.
Ambidextrous Pitcher -
Here are creative spellings seen in actual web searches ...
• ambydeckstrus pitcher ny yankees
• ambridextrious baseball glove
Amphibious pitcher makes debut
(published in a newspaper headline)
..Favorite headline of week. He pitches righty, lefty — and evidently, also underwater. Faces Aquaman in next outing. pic.twitter.com/efxaQxFp8Z— Neill Woelk (@NeillWoelk) June 8, 2015