Amateur Gruenebaum, who is Jewish, is an
Overland Park,
Kansas, native. He was an All-American at
Blue Valley North High School. He attended the
University of Kentucky, where he recorded 21 shutouts in 66 collegiate games. Gruenebaum earned All-Conference honors and picked up the nickname "The Hebrew Hammer." Prior to his senior season, Gruenebaum starred for the
Des Moines Menace in the
USL Premier Development League and was named MVP of the 2005 PDL championship as the Menace won their first title.
Professional Gruenebaum was selected by the
Columbus Crew with the third overall pick in the
2006 MLS Supplemental Draft. He made his MLS debut in May 2006 when
Jon Busch suffered a knee injury in a match against
D.C. United and started the final two matches of the season. He started ten matches in the 2007 season, earning his first two career shutouts in back-to-back matches in April. However, his playing time gradually decreased as
Will Hesmer established himself as the starting goalkeeper. He made just one league start in 2008 as the Crew won the
Supporters' Shield and
MLS Cup. Playing time remained sporadic due to the presence of Hesmer and Gruenebaum's own injuries, but he finally enjoyed a breakout season in 2012, starting 33 matches (including eight shutouts) as Hesmer missed time with injuries. He continued to start in 2013 despite missing time due to injuries. Following the 2013 season, Gruenenbaum was traded to his hometown club,
Sporting Kansas City, in exchange for a second-round pick in the
2016 MLS SuperDraft. However, Gruenenbaum instead opted to retire and take a role as a broadcaster with Sporting. ==Career statistics==