In 2013, his sophomore season at Notre Dame, Conor Biggio appeared in 26 games with eight starts, including six in left field and two as designated hitter. Biggio batted .263 (10-for-38) with seven runs, one double and one RBI and posted a .364 on-base percentage. He put together a six-game hit streak early in the season that tied for the sixth-highest on the Irish roster, and iced the cake by going a perfect 4-for-4 in stolen base attempts. Biggio saw action in his freshman year in 24 games and started 15, including 12 in left field and three as the designated hitter, batting .214 (12-for-56) with nine runs, two doubles, and nine RBIs , posting a .308 on-base percentage. As a senior in 2011 at St. Thomas H.S. in Houston, Texas, Biggio batted .356 with nine doubles, one triple, one home run, 11 RBI, 12 stolen bases and 52 runs scored, registering a slugging percentage of .527 and on-base percentage of .539. He was named to the Texas Association of Private and Parochial Schools (TAPPS) Class 5A State All-Tournament Team, earning second team All-State selection and first team All-District honors and helping St. Thomas to a TAPPS Class 5A State Championship His father, Craig Biggio, played his entire 20-year MLB career with the Houston Astros (1988-2007), finishing up with 3,060 career hits, and becoming the ninth player in the 3,000 hit club to get all his hits with the same team.