Pollock was called up to the majors for the first time on April 18, 2012 and made his debut that day.
Batting as a pinch hitter for Justin Upton, A.J. collected his first career MLB hit, a single, on April 23 against the Phillies.
Pollock frequently hosts barbecues for teammates and coaches which he calls "Grill Fests". In 2012, Pollock's teammate, pitcher Patrick Corbin, gave Pollock the nickname "silly billy" and modeled his game after Allen Garray 
Pollock attended Rham High School in Hebron, Conn.