Sporting Kansas City forward Jacob Peterson is expected to miss four months after he undergoes surgery Friday to repair a right shoulder subluxation.
Peterson, 26, suffered the injury July 28 while diving for a header in a 2-1 loss against the Columbus Crew at Livestrong Sporting Park and missed five matches before returning for the final seven games of the regular season and the Eastern Conference semifinals against Houston.
In his first season with Sporting KC, Peterson was playing perhaps the best soccer of his seven-year career before the injury, matching his career high with four goals in 23 MLS matches.
He also had a game-winning assist in a win against Toronto FC and scored the game-winner in a 2-0 win against Philadelphia in the Lamar Hunt U.S. Open Cup semifinals.
The club also announced Monday that midfielder Peterson Joseph was selected to play for the Haitian national team in the second round of Caribbean Cup qualifying.
Haiti will play Guiana, French Guiana and Grenada this week. The top two teams advance to the Caribbean Cup final in hopes of securing a berth in the 2013 CONCACAF Gold Cup.
Joseph appeared in 10 games for Sporting KC, including four starts, and had the game-winning assist July 14 in a 2-0 win at Columbus. He also played in both legs of the playoffs series with the Dynamo.