2013 Season: Has not made a regular-season appearance in 2013.
2013 Reserve League: Has made three starts at centerback.
2012: Gehrig made 12 appearances, eight of which were starts, to log 812 minutes and one assist for the Black & Gold. Gehrig also captained the Crew to its second-straight MLS Reserve League crown. He started and played 90 minutes in the Crew's lone match in the Lamar Hunt U.S. Open Cup.
2011: Gehrig made his MLS debut on June 26 against Colorado playing five minutes. He made his first MLS start on July 2 at Vancouver, appearing in a total of eight matches with four starts
Gehrig also appeared in seven matches with six starts in the MLS Reserve League, helping the Black & Gold to the best record in the East Division. As a rookie, Gehrig started in one Open Cup match.
Gehrig appeared in 78 matches during his four-year tenure at Loyola University Chicago (2006-2009), scoring 10 goals and recording 10 assists. He was named to the All-Horizon League First Team three years in a row (07-09).
Signed on February 21, 2011 as a Discovery Signing.
Gehrig has a twin brother named Greg. A Chicago-area native, Eric is an avid fan of the Chicago Bears, Chicago Bulls and Chicago Blackhawks.