http://msn.foxsports.com/nfl/story/6180308 HOUSTON (AP) - When Eric Moulds signed with the Texans in April after demanding a trade from the Bills, he'd already circled the date of Houston's game with Buffalo on his calendar. "Any time you played in a place for 10 years, and you get an opportunity to play against that team, it's going to be a little bit different," Moulds said. "It's going to be exciting. I'm going to have a lot of mixed emotions." "Eric's meant a lot more to this team than the number of catches that he's had or what he's done as far as numberswise," David Carr said. "You should just double the amount of catches he has at the end because of how many times he's gotten Andre and Owen (Daniels) and those guys open." Coach Gary Kubiak agreed. "I think he's showed Andre a lot of things about just being an old pro and how to work," Kubiak said. "And he's helped a lot of kids on our team, and I know this is a big week for him." No. 1 pick Mario Williams, a defensive end, leads the team with 4 1/2 sacks, but has struggled with a sore arch in his right foot. He's been limited in practice this week, but coach Gary Kubiak said he'll play. Eric Winston will join the bevy of rookies who have started for Houston this season when he gets his first start at right tackle in place of Zach Wiegert, who went on injured reserve this week. Winston, a third-round pick, has appeared in five games and made a key block on fourth-and-inches last week that helped seal Houston's win over Jacksonville. Carr expects to play, but said his bruised shoulder was pretty swollen after practice Wednesday. He was injured early in the fourth quarter against Jacksonville and didn't return.