HOUSTON, TX – AUGUST 22: Peyton Manning #18 of the Denver Broncos works on the field before the start of their game against the Houston Texans at NRG Stadium on August 22, 2015 in Houston, Texas. (Photo by Scott Halleran/Getty Images)
HOUSTON, TX – AUGUST 22: Peyton Manning #18 of the Denver Broncos works on the field before the start of their game against the Houston Texans at NRG Stadium on August 22, 2015 in Houston, Texas. (Photo by Scott Halleran/Getty Images)