Burke Waldron is U.S. Navy veteran who participated in the invasions of Makin and Saipan in the Pacific during World War II. He left the Navy in 1946 at the rank of Petty Officer 2nd Class.
On Memorial Day 2016, the Seattle Mariners asked Waldron to throw out the first pitch in their game against the Padres. Waldron took the mound in his dress uniform and hurled a left-handed heater to Mariners' catcher Steve Clevenger.
See Waldron's awesome game-opening throw in the video below: