John Fox returned to active duty as head coach of the Denver Broncos on Monday, nearly a month after having aortic valve replacement surgery on Nov. 4.
Although he visited players on Thanksgiving after returning to Denver last Wednesday, Monday was his first official day back in charge of the team.
Fox has not yet decided whether he will be on the field or up in the press box for Sunday's home game against the Tennessee Titans.
The Broncos went 3-1 with defensive coordinator Jack Del Rio as the interim head coach in Fox's absence.
While Fox was away from the team, he spent much of his time at home in North Carolina on his iPad, assisting with the team's game plan.