Fox is a graduate of Cathedral High School and went on to attend the University of Michigan where he earned first-team all-Big Ten conference honors.

As a member of the Lugnuts, Fox was given the opportunity to catch for then-Cubs pitcher Mark Prior, who was on a rehab assignment.

[4] On July 19, 2007, Fox was called up from Double-A Tennessee to the major leagues after shortstop César Izturis was traded to the Pittsburgh Pirates.

He made his major league debut on July 19, 2007, against the San Francisco Giants in a pinch hitting role and grounded into a double play.

He was batting .423 and had hit 17 home runs and 50 RBIs by June 1, 2009, and was leading the PCL in both of these categories along with RBI, slugging percentage, and OPS.

He achieved success as a part-time utility player, capable of filling in at corner outfield and infield positions, as well as catcher.

[11] On December 3, 2009, the Oakland Athletics acquired Fox along with Aaron Miles, from the Chicago Cubs for Jeff Gray, Matt Spencer and Ronny Morla.

[25] Fox signed a minor league contract with the Toronto Blue Jays on December 12, 2014, that included an invitation to spring training.

[26] He played 29 games for the Double-A New Hampshire Fisher Cats before being released in order to sign a 1-year, $120,000 contract with the Hanwha Eagles of the Korea Baseball Organization.