College and amateur Sinovic grew up in
Leawood, Kansas to parents of Croatian descent, and attended
Rockhurst High School, and played
college soccer at
Creighton University from 2006 to 2009. During this time Sinovic earned such accolades as First-team all-Missouri Valley Conference, second-team NSCAA All-Midwest Region and second-team all-MVC honors. During his college years Sinovic also played for
Chicago Fire Premier in the
USL Premier Development League, helping the team to the 2009 USL PDL championship game. He also interned for CMZ Trading, LLC, a financial firm specializing in options in Chicago, IL.
Professional Sinovic was drafted in the second round (25th overall) of the
2010 MLS SuperDraft by
New England Revolution. He made his professional debut on March 27, 2010, in New England's opening game of the 2010 MLS season against
Los Angeles Galaxy. He was waived by New England on March 31, 2011, having appeared in 20 league games for the Revs during his rookie season. After being waived by New England, Sinovic went on trial with fellow Major League Soccer club
Real Salt Lake in April 2011, and played a couple of games in the
MLS Reserve Division, but was not offered a contract by the team. After leaving Salt Lake, Sinovic signed with
Sporting Kansas City on May 10, 2011. Sinovic was left exposed by Sporting Kansas City in the
2011 MLS Expansion Draft and was selected by expansion side
Montreal Impact. However, five days later, Sinovic was shipped back to Kansas City with allocation money in exchange for
Davy Arnaud. Sinovic was a starting member of the Sporting KC
MLS Cup 2013 championship team. He played a full 120 minutes, including overtime, then successfully scored a penalty kick. He was honored as the Sporting Kansas City Defensive Player of the Year for his performance during the 2014 season. Sinovic scored five goals in his professional career. Two occurred during the
MLS postseason and one each in MLS regular-season play,
CONCACAF Champions League play and on loan with USL affiliate
Swope Park Rangers. He announced his retirement as an active player on September 23, 2021 after appearing in 282 matches throughout his career. ==Honors==