LAKE BUENA VISTA, Fla. (AP)
Bluiett had 11 points as Xavier (6-0) took control early on en route to a 54-27 halftime lead.
Xavier also got 13 points from Edmond Sumner.
Nikola Jovanovic and Julian Jacobs had 15 points each for USC (5-1). The season-opening five-game run was the Trojans' best since starting 2000-01 with an 8-0 record.
The Musketeers were 6 of 13 from 3-point range, including Bluiett converting 3 of 4 during the opening half.
Bluiett had a pair of 3s and Jalen Reynolds added two slams during a 17-0 run that put Xavier ahead 19-3 5 minutes into the game.