HOUSTON — Deshaun Watson, the Texans' record-setting rookie quarterback, suffered a torn ACL in his right knee in practice Thursday and is most likely out for the rest the season, reports said.Watson, the 12th overall pick in the draft out of Clemson, was hurt while running a read-option play on a grass practice field, ESPN reported. He appeared to trip or fall. He got up and felt the knee before it was looked at. He didn't finish practice.Coach Bill O'Brien didn't talk about any knee issues for Watson in his news conference. Clemson coach Dabo Swinney said on Twitter he talked to Watson late in the afternoon and "we are disappointed.""But he is a person who has had some setbacks in his life and always comes back stronger," Swinney said. "Since he went through the rehab before (for a torn ACL in 2014 at Clemson), he knows what it takes.Watson was a leading candidate for rookie of the year. His 19 touchdown passes — 16 of which came over the past four games — are tied for the league lead, and he ranks fifth in passer rating. The 19 touchdowns are a record for a player in his first seven games, and he also has two rushing touchdowns.Tom Savage is Watson's backup. He is 1-2 in three career starts. Also, Houston will sign Matt McGloin, reports said. A former Penn State quarterback, McGloin had his best college season in 2012, the year O'Brien was his head coach. McGloin joined the Raiders as an undrafted rookie in 2013 and spent four years in Oakland, starting seven games. He signed with the Eagles this offseason but was released at the end of the preseason.Colts end Luck's season: Quarterback Andrew Luck, who hasn't played this year after January shoulder surgery for a partially torn labrum, was put on injured reserve, ending his year. He will begin a different rehabilitation program that team officials believe will get him on the field next fall. Cowboys: The team will use a committee approach at running back to replace Ezekiel Elliott, who has been suspended by the NFL for the next six games. Alfred Morris will start against the Chiefs on Sunday, with Rod Smith and Darren McFadden rotating in, offensive coordinator Scott Linehan said. Morris has been the primary backup for Elliott through the first seven games, rushing 13 times for 105 yards.