After graduating from Conard High School in West Hartford,[1] he was selected by the Braves in the second round of the 1978 Major League Baseball Draft.

He was the 27th player chosen overall, 21 slots ahead of eventual Baseball Hall of Famer Cal Ripken Jr.

His 48 career big-league hits included six doubles, one triple, and one home run, a two-run blow off Pete Falcone of the New York Mets on August 27, 1982.

The homer contributed to a 9–8 Atlanta victory in a year when the Braves prevailed over the Los Angeles Dodgers to win the National League West Division championship by a single game.

[2] After drawing his release from the Mariners in October 1992, Sinatro was Seattle's MLB advance scout in 1993–94 before joining the big-league coaching staff of manager Lou Piniella.