Jay Parker (July 8, 1874 – June 8, 1935) was a starting pitcher who played briefly for the Pittsburgh Pirates during the 1899 season.
Listed at 5 ft 11 in (1.80 m), 185 lb., Parker batted left-handed and threw right-handed.
Parker was 25 years old when he entered the majors on September 27, 1899 with Pittsburgh, starting against the Chicago Orphans.
His performance that afternoon at West Side Park, reduced to the bare essentials, matching his career totals: three batters, hit one, walked two, and gave up two earned runs, without making an out to have an undefined ERA.
This biographical article relating to an American baseball pitcher born in the 1870s is a stub.