A Leawood, Kansas native, Sinovic walked on at Creighton University and became a team captain for the Blue Jays in 2008 and 2009 before being drafted by the New England Revolution in the 2010 MLS SuperDraft. Sinovic was then signed by Sporting Kansas City in May 2011 after one season in New England. He scored his first professional goal in the 2012 MLS Cup Playoffs and registered the second of his career in the 2013 postseason as Sporting KC won MLS Cup.
2015: MLS regular season: Has started nine of 10 appearances and contributed to three clean sheets (838 minutes played). Returned to the lineup on Aug. 29 after missing more than three months with a concussion. Open Cup: Started and played 78 minutes in a championship win over the Philadelphia Union on Sept. 30 as Sporting KC prevailed 7-6 in penalty kicks after a 1-1 draw in regulation.
2014: Was named Sporting KC's 2014 Defender of the Year. MLS regular season: Appeared in 31 matches, all starts, and contributed to nine shutouts with two assists. Earned his first assist of the season on Lawrence Olum's goal in a 1-0 win over the Portland Timbers on June 27. Earned MLS Team of the Week honors (Week 23) after a 4-1 win over Toronto FC on Aug. 16. Assisted Dom Dwyer's goal in a 2-1 loss at New York on Sept. 6. MLS Playoffs: Played 90 minutes in a 2-1 loss at New York in the Eastern Conference Knockout Round (Oct. 30). CCL: Played 90 minutes in the 2013-14 CONCACAF Champions League first leg against Cruz Azul, contributing to a 1-0 shutout win. Started four matches (360 minutes) in the 2014-15 group stage, contributing to one shutout. Assisted Claudio Bieler's opening goal in a 3-0 win over Real Esteli on Sept. 23. Open Cup: Played 90 minutes in a 2-0 fourth round win over Minnesota United FC on June 18. Played 90 minutes in a 3-1 fifth round loss to Portland on June 24. Friendly: Played 45 minutes in a 4-1 Champions Shield defeat to Manchester City on July 23 at Sporting Park.
2013: MLS: Set career-high in games played (32), games started (31) and minutes (2,773). Tallied three assists, all game-winners. Assisted on Aurelien Collin's goal at Houston on May 12, Graham Zusi's goal at Chicago on July 7 and Soony Saad's goal vs. Toronto FC on July 23. Playoffs: Started and played full-time in all five MLS Cup Playoff matches. Scored the game-tying goal in the second leg of the Conference Semifinal series vs. New England. Converted his penalty kick in the MLS Cup Final shootout vs. Real Salt Lake. CCL: Started all four of Sporting KC's 2013-14 CONCACAF Champions League group stage matches. Open Cup: Played 90 minutes in a 1-0 loss to Orlando City SC on June 12.