Dixon, a freshman, did not attend the Cal game because of an unspecified “student conduct issue,” Coach Steve Sarkisian said after the Trojans’ 38-30 victory.
Monday's practice was closed to the media. Coaches and players are not made available to reporters on Mondays.
USC players had been off since Friday, so Monday’s full-pads workout was an extra practice for the Trojans, who followed a similar schedule going into the Cal game after an open date.
Linebacker J.R. Tavai, sidelined since suffering a knee sprain against Utah on Oct. 25, also returned to practice.
The Trojans’ game against UCLA at the Rose Bowl kicks off at 5 p.m.