Jon Kempin became Sporting KC’s first ever Homegrown Player upon signing for the club in August 2010. The Leawood, Kansas native enjoyed a banner year in 2014, becoming the youngest goalkeeper in team history to play in an MLS match. At the beginning of 2015, he was named to the United States Men’s National Team roster for the first time in his career to take part in manager Jurgen Klinsmann’s January Camp. He previously represented the U.S. at the Under-14 through Under-23 levels. Sporting KC loaned Kempin to the San Antonio Scorpions on March 20 ahead of the 2015 North American Soccer League season. After playing two NASL matches in San Antonio, Kempin was recalled to Sporting KC at the end of April. He made his MLS postseason debut on Oct. 29, making three saves in a penalty kick shootout against the Portland Timbers.
2016: MLS regular season: Has not featured. Open Cup: Did not feature. CONCACAF Champions League: Started and played 90 minutes in a 2-2 draw at Central FC on Aug. 16. Started and played 90 minutes in a 3-0 loss at Vancouver Whitecaps FC on Aug. 23. Swope Park Rangers: Was loaned to the Rangers on March 25.
2015: MLS regular season: Earned three starts and played 270 minutes (1-1-1 record, 1.67 GAA, 6 saves). Made his 2015 debut for the club in a 3-1 defeat at Orlando City SC on Sept. 13. Recorded his first win of the campaign in a 3-1 triumph over FC Dallas on Sept. 18, making three saves. MLS Cup Playoffs: Made his postseason debut on Oct. 29 as an 84th-minute substitute, replacing the injured Tim Melia, and made three saves in a penalty shootout that Sporting KC lost to Portland 7-6 after a 2-2 draw through regulation. Open Cup: Has not featured. NASL (San Antonio Scorpions): Saved a penalty kick in San Antonio's 4-2 friendly win over the Costa Rica U-23 national team on March 28. Has earned two starts and played 180 minutes (2.50 GAA, 5 saves). Made his NASL debut on April 4.
2014: MLS regular season: Played in four games with three starts. Made his MLS debut in the second half of a 2-0 loss at the Vancouver Whitecaps on Aug. 10, saving a penalty kick in the 84th minute to become the fifth youngest keeper in MLS history to save a penalty kick and the fifth keeper all-time to save a penalty in his MLS debut. Won MLS Save of the Week (Week 22) for the penalty stop against Vancouver. Made his first MLS start in a 4-1 win over Toronto FC on Aug. 16, notching another Save of the Week winner. Was named Most Valuable Player in the inaugural Chipotle Homegrown Game on Aug. 4 in Portland. He played 45 second half minutes in the 0-0 draw against Portland Timbers U-23, recording two impressive saves to preserve a clean sheet. MLS Playoffs: Did not feature. CCL: Featured in the 2014-15 group stage, playing 90 minutes in a 1-1 draw against Real Esteli on Aug. 19. Open Cup: Did not feature. Friendly: Played 45 minutes in a 4-1 Champions Shield defeat to Manchester City on July 23 at Sporting Park. USL PRO: Was loaned to USL PRO affiliate OKC Energy FC on March 17. Earned USL PRO Team of the Week honors for Week 12 after tying his season-high with five saves in Energy FC's 2-2 draw at Wilmington Hammerheads FC on June 6. Played in 13 USL PRO matches, posting a 5-7-1 record, five shutouts, 37 saves and a 1.38 goals against average. Was recalled from his loan to OKC Energy FC on July 9.
2013: Spent season on loan with USL Pro affiliate Orlando City SC. MLS: Did not feature.