Altogether , 17 players on the U.S. World Cup roster have played professionally in MLS .
Of the team 's 23 players , 12 currently play in Major League Soccer and 11 play professionally in Europe .
Altogether , 17 players on the U.S. World Cup roster have played professionally in Major League Soccer .
Of the team 's 23 players , 12 currently play in Major League Soccer and 11 play professionally in Europe .