Howard drained six 3-pointers and finished 7 for 10 from the field and Mosby shot 9 for 15 while hauling in seven rebounds as Alcorn State (10-17, 6-8 Southwestern Athletic Conference) dominated the glass 43-25 to pick up its third-straight win.
Trailing 40-39 at the break, Alcorn State took control in the second half, getting a jumper from Dante Sterling to spark a 10-0 run to make it 54-47 with 13:36 to play and put the Braves on top for good.
The Bulldogs have lost nine in a row.
James is the highest-ranked prospect to commit to the Vols under Rick Barnes and the highest overall since Tobias Harris in 2010.
Five-star point guard Josiah James, ranked No. 20 in the ESPN 100, has committed to Tennessee over Clemson, Duke and Michigan State.
Jim Calhoun, who has a career record of 873-380 and led UConn to three national titles before retiring in 2012, has been hired as coach at Saint Joseph.