Bocanegra, who captained the USA at the 2010 World Cup, returned to MLS in 2013 after
parts of 10 seasons in England, France, Scotland and Spain.
"I'm still hungry for the game and I want to play," he said in a statement, "but unfortunately you can't play forever. I was thinking about this in the offseason, and it took me about six months to come to a final decision. The timing is right for me. I've known for a little while now in my mind and in my heart. I'm happy with it, and I'm looking forward to the new challenges.”
He had begun his career with the Chicago Fire in 2000 when he was MLS Rookie of the Year. He earned back-to-back MLS Defender of the Year honors in 2002 and 2003 before moving to Fulham in January 2004. He also played for Rennes and St. Etienne in France, Rangers in Scotland and Racing Santander in Spain.
Bocanegra made 110 career appearances for the national team. He has not been called into the national team since the first game of the 2013 Hexagonal when U.S. coach Jurgen Klinsmann introduced Omar Gonzalez and Geoff Cameron as his center backs.