Houston Texans head coach Bill O'Brien calls directions to his players during an NFL training camp football practice Thursday, Aug. 27, 2020, in Houston. (Brett Coomer/Houston Chronicle via AP, Pool)

Fans watch the Kansas City Chiefs during NFL football training camp Saturday, Aug. 29, 2020, at Arrowhead Stadium in Kansas City, Mo. The Chiefs opened the stadium to 5,000 season ticket holders to watch practice as the team plans to open the regular season with a reduced capacity of approximately 22 percent of normal attendance. (AP Photo/Charlie Riedel)

Kansas City Chiefs running back Clyde Edwards-Helaire runs during NFL football training camp Saturday, Aug. 29, 2020, at Arrowhead Stadium in Kansas City, Mo. The Chiefs opened the stadium to 5,000 season ticket holders to watch practice as the team plans to open the regular season with a reduced capacity of approximately 22 percent of normal attendance. (AP Photo/Charlie Riedel)

Houston Texans quarterback Deshaun Watson (4) runs a play during an NFL training camp football practice Thursday, Aug. 27, 2020, in Houston. (Brett Coomer/Houston Chronicle via AP, Pool)