Kasey Keller and Herculez Gomez chime in the omission of Christian Pulisic, Antonee Robinson and Yunus Musah from the USMNT's squad for the Gold Cup. (4:01)Open Extended ReactionsFulham and United States men's national team defender Antonee Robinson has undergone successful knee surgery, the club confirmed on Wednesday. "We decided the best for him [Pulisic], the best of the team, the best for the national team is the decision that we made. Brady, who has not played for the national team, joins goalkeepers Matt Turner, Zack Steffen and Matt Freese on the U.S. roster. The U.S. begins its Gold Cup campaign on June 15 with a group stage match against Trinidad and Tobago.