Background: Elroy Leon "Crazylegs" Hirsch (June 17, 1923 - January 28, 2004) was an American football player, sport executive and actor. He was inducted into the Pro Football Hall of Fame in 1967 and the College Football Hall of Fame in 1974. He was also named to the all-time All-Pro team selected in 1968 and to the National Football League (NFL) 1950s All-Decade Team. A native of Wausau, Wisconsin, Hirsch played college football as a halfback at the University of Wisconsin and the University of Michigan, helping to lead both the 1942 Badgers and the 1943 Wolverines to No. 3 rankings in the final AP Polls.
Context: In January 1943, Hirsch enlisted in the United States Marine Corps and was transferred to the University of Michigan as part of the V-12 Navy College Training Program. In early September 1943, he broke the record at Michigan's Marine Corps training center, completing a 344-yard obstacle course in one minute and 31 seconds. He was the starting left halfback in the first seven games of the season for Fritz Crisler's 1943 Michigan Wolverines football team that compiled an 8-1 record and was ranked No. 3 in the final AP Poll. After watching Hirsch in pre-season practice, Associated Press football writer Jerry Liska referred to "squirming Elroy Hirsch" as "Wisconsin's gold-plated wartime gift to Michigan." Hirsch and Bill Daley (a V-12 transfer from Minnesota) became Michigan's most powerful offensive weapons during the 1943 season and were dubbed Michigan's "lend-lease backs."  In his first game for Michigan, Hirsch returned the opening kickoff 50 yards, scored two touchdowns and intercepted a pass. He scored five touchdowns in Michigan's first three games and threw for a touchdown in the fourth game against Notre Dame. On October 11, 1943, Hirsch scored three touchdowns, including a 61-yard reverse around the right end, and intercepted a pass to help Michigan to its first victory over Minnesota since 1932. Due to a shoulder injury, he appeared only briefly as a backup to kick for extra points in the final two games of the season, but he still led the Wolverines in passing, punt returns, and scoring.  During the 1943-1944 academic year, Hirsch also won varsity letters in basketball (as a center), track (as a broad jumper), and baseball (as a pitcher), becoming the first Michigan athlete to letter in four sports in a single year. He averaged 7.3 points per game for the 1943-44 Michigan Wolverines men's basketball team, compiled a 6-0 record as a pitcher for the Michigan baseball team, placed third in the long jump in the 1944 indoor championship, and led all three teams to Big Ten Conference championships. On May 13, 1944, Hirsch starred in two sports in the same day, winning the broad jump with a distance of 24 feet, 2-1/4 inches at a track meet in Ann Arbor, Michigan, and then traveling to Columbus, Ohio, where he pitched a one-hitter to give Michigan's baseball team a 5-0 victory over Ohio State.
Question: Which other sports did he letter in?

Answer:
Hirsch also won varsity letters in basketball (as a center), track (as a broad jumper), and baseball (as a pitcher),