Drafted in the first round of the 2011 MLS SuperDraft out of James Madison University, Sapong was named the 2011 MLS Rookie of the Year with five goals and five assists in his first professional season and scored in the 2011 MLS Cup Playoffs. He tied for the team lead with nine goals in 2012 after debuting for the U.S. Men’s National Team in January 2012.
2014: MLS regular season: Played in 20 matches with seven starts. Scored his first goal of the season in a 2-1 win over Columbus on July 16. Scored in a 4-1 win over Toronto FC on Aug. 16. Sporting KC is now 19-0-2 all-time in MLS (including postseason) when Sapong scores. MLS Playoffs: Played 81 minutes in a 2-1 loss at New York in the Eastern Conference Knockout Round (Oct. 30). CCL: Appeared as a second half substitute in both legs of the 2013-14 CONCACAF Champions League quarterfinals vs. Cruz Azul. Started two of three total appearances (187 minutes) in the 2014-15 group stage. Open Cup: Played 10 minutes in a 2-0 fourth round win over Minnesota United FC on June 18. Played 19 minutes in a 3-1 fifth round loss to Portland on June 24. Friendly: Scored a goal and played 45 minutes in a 4-1 Champions Shield defeat to Manchester City on July 23 at Sporting Park.
2013: MLS: Sapong appeared in 25 matches with 16 starts in 2013. He tallied four goals and two assist including two goals in a 2-1 win at Toronto FC on September 21. He notched his first goal of the season on May 5 and helped secure Sporting's 4-0 win over Chivas USA. Scored the final goal in a 3-0 win over the Columbus Crew on September 7. Playoffs: Appeared in all five MLS Cup Playoff matches. Assisted on Aurelien Collin's goal in the first leg of the Conference Semifinal series vs. New England. Scored the game-tying goal in the Eastern Conference Championship vs. Houston. Converted his penalty kick in the MLS Cup Finaly shootout vs. Real Salt Lake. CCL: Appeared in four 2013-14 CONCACAF Champions League group stage matches with one start. Open Cup: Appeared in both Lamar Hunt U.S. Open Cup matches including one start against Des Moines Menace on May 29.
2012: After an impressive rookie season landed Sapong the 2011 MLS Rookie of the Year accolade, he didn’t take his foot off the pedal. Sapong added another nine goals and two assists during the 2012 regular season. In Sporting KC’s most recent outing, Sapong scored the game-winner in the 82nd minute. The goal marked his fifth game-winning goal of the season, tying Preki’s 1997 campaign for third most in a single season in club history. Sapong ranks sixth on the MLS chart for game-winning goals in 2012. Sapong scored the first and last goal of the 2012 regular season. He also scored the first and last goal of the 2011 MLS season (including playoffs). Sapong scored in the regular season home finale in both 2011 and 2012. Sapong’s goal against Philadelphia in Sporting KC's regular season finale was his 14th regular season goal, tying for him for 10th most among college draft choices in their first two MLS seasons. He matches Teal Bunbury’s goal count through two seasons and trails only Scott Sealy (19 goals from 2005-2006) among KC draft picks all-time. Sapong scored goals in three of the team's first four MLS matches, including game-winning goal in second-half stoppage time of 1-0 victory at D.C. United in season opener. Awarded AT&T Goal of the Week for Week 12. Sapong played in all five Lamar Hunt U.S. Open Cup matches and scored two goals in competition, both coming in a 3-0 win over the Dayton Dutch Lions. Scored goals in back-to-back games against the Houston Dynamo (Video) on September 14 and New York Red Bulls (Video) on September 19. Sapong was also awarded the 2012 MLS Celebration of the Year alongside Kei Kamara.
2011: Selected with the 10th overall pick in the first round of the 2011 MLS SuperDraft. Started season opener on March 19 vs. Chivas USA and scored in second minute of professional debut. It was the fastest goal scored by a rookie who started their debut in MLS history, surpassing mark set by teammate Michael Harrington. Scored first-ever MLS goal at Sporting Park with game-winner against San Jose Earthquakes on June 17. On October 15, Sapong scored within seconds of entering the game to help Sporting Kansas City beat New York and clinch a spot in the playoffs. Scored the second goal in the 2-0 victory over the Colorado Rapids in the second leg of the playoffs Finished the season as the only Sporting player to play in all 34 games and tallied five goals and five assists. Sapong was named the 2011 Rookie of the Year.
Sapong was invited to the U.S. Men’s National Team’s 2012 January camp alongside Teal Bunbury and Graham Zusi. Sapong came on as a substitute and was capped twice in the friendlies against Venezuela and Panama.