On July 10, 1923, Cardinals rookie pitcher Johnny Stuart pitched two compete game wins over the Braves in Boston. The first game Stuart allowed just 3 hits as the Cardinals rolled to a 11-1 victory. The second game wasn't as smooth for Stuart, he gave up 10 hits but only 3 Braves runners would score while the Cardinals plated 6 for their second win of the day behind the outstanding effort of the young hurler. Unfortunately it would be what he was remembered for the most, Stuart spent three full seasons with the Cardinals posting a 20-18 record before hanging up the cleats at the end of the '25 season. In 1926 he was hired to coach the baseball team at Marshall University he held that position until 1932, the team posted a 67-21-1 record while he was at the helm. Only Bill Doak in 1917 and Hi Bell in 1924 have pitched and won both games of a doubleheader for the Cardinals, the last time any pitcher accomplished it in the majors was in 1926 when Dutch Levsen did it for the Indians.
Here are the box scores to both games
Game 1: http://www.baseball-reference.com/boxes/BSN/BSN192307101.shtml
Game 2: http://www.baseball-reference.com/boxes/BSN/BSN192307102.shtml