2013 (Crew): Gehrig made six starts at centerback in 2013 and became the first Crew player to be awarded the Kirk Urso Heart Award after the honor was posthumously given to Urso in the inaugural year of its recognition. He made his season debut in a start at centerback in the match at Toronto (May 18) and then made four consecutive starts. Gehrig also made a substitute appearance in the international friendly against Wigan Athletic (July 13). He missed two matches with a right ankle sprain: against New England (July 20) and at Toronto (July 27) and returned to action with a start at centerback against Houston (September 4) and at Sporting KC (September 7). He did not travel to Montreal (September 14) with a hamstring injury. Gehrig made eight starts in MLS Reserve League action: six at centerback, one at rightback, and one at left back, while also often serving as captain. Additionally, he made two starts at centerback in the Lamar Hunt U.S. Open Cup: in the Third Round win against Dayton Dutch Lions (May 29) and in the 2-1 loss in the Fourth Round at Chicago (June 13).
2012 (Crew): 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 (Crew): 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.