INDIANAPOLIS (AP) — John Fox has some bad news for the other 31 NFL teams: Peyton Manning could be even better in 2013.

The Denver coach says Thursday at the league’s annual scouting combine that with another offseason to heal and to fine-tune his comfort with Denver’s offense, the four-time MVP and reigning Comeback Player of the Year could have a more impressive second season in the Mile High City.

Fox says a year ago the Broncos were doing homework on Manning.

They saw a dramatic improvement in Manning’s workouts last offseason at Duke, and then with the quarterback’s passing in the second half of the 2012 season.

NFL exec: HGH testing resolution needed

INDIANAPOLIS (AP) — NFL senior vice president Adolpho Birch says the league and players association need to reach agreement soon on HGH testing.

The NFL and the union agreed in principle to HGH testing when a new 10-year labor agreement was reached in August 2011. But protocols must be approved by both sides and the players have questioned the science in the testing procedures, stalling implementation.

Speaking at the scouting combine Thursday, Birch says the NFL has full confidence in the test and "should have been a year into this by now." He calls the delays "a disservice to all of us."

Auburn facing lots of unknowns at QB, elsewhere

AUBURN, Ala. (AP) — Auburn’s coaching staff approaches spring practice with plenty of question marks. One that likely won’t be fully resolved this spring is who’s the starting quarterback for next season.

Returning passers Kiehl Frazier and Jonathan Wallace will be joined by three signees in preseason camp, taking it from a two-man race to a five-quarterback derby.

Auburn offensive coordinator Rhett Lashlee knows there are a lot of unknowns at that position but says "the best guy for us and for this team will rise up."

Lashlee and Gus Malzahn’s other assistant coaches spoke to reporters Thursday about the recent signing class and spring practice, which begins on March 27.

Cannon checks out of hospital after stroke

BATON ROUGE, La. (AP) — LSU vice chancellor Herb Vincent says former Tigers great Billy Cannon has checked out of a hospital, two days after being admitted for treatment of a stroke.

Vincent says one of Cannon’s family members informed him Thursday that Cannon was on his way home.