UConn spokesman Phil Chardis said the injury isn't believed to be serious but Napier didn't want to take any chances. Napier, who averaged 12.7 points and 5.8 assists last season, was bothered throughout 2011-12 with nagging injuries to his ankle, knee and foot.
Napier said repeatedly that he wants to enter next season without the tendinitis and other pain that hampered his play during his sophomore season.
Napier was eligible for the Puerto Rican team because his grandparents were Puerto Rican citizens. Florida's Mike Rosario is one of the guards on the team, which began qualification rounds on Monday in San Juan. Former Siena players Alex Franklin and Edwin Ubiles made the roster as well.