Marcus T. Hallberg (born December 9, 1985) is an American professional baseball first base coach for the San Francisco Giants.
Hallberg attended the University of Illinois Chicago for two years, where he played college baseball for the Illinois-Chicago Flames.
In his freshman year for the Flames in 2005, he was the fourth-toughest hitter in the nation to strike out, and batted .354, while leading the league in hits (84) and runs (54).
[7] The Arizona Diamondbacks selected Hallberg in the ninth round, with the 283rd overall selection, of the 2007 Major League Baseball draft, and he signed for a signing bonus of $95,000 and played in Minor League Baseball within the Diamondbacks' farm system.
[11] After he retired as a player in April 2012, Hallberg coached the River Falls High School baseball team as he finished his Bachelors degree.
From 2014 to 2017, he was assistant coach of the Orleans Firebirds of the Cape Cod Baseball League.
[16] Hallberg holds a Bachelor’s in Health and Human Performance (K-12 Teaching) and a Master’s in Business Administration (MBA).