Arian Foster said he plans to be in the Texans’ starting backfield for the regular season-opener Sept. 9 at San Diego. The star running back was activated from the PUP list Wednesday and went through his first practice since training camp began. “I’ll be ready” said Foster who recorded a league-high 351 carries last season for 1424 yards and 15 touchdowns. Foster acknowledged being frustrated during his rehabilitation. He always thought he’d play Week 1 though and said his conditioning is game-ready. Now he just has to get back to playing football at full speed. “It’s me being aware of my body and you guys pressing coach for answers; him giving answers that he doesn’t know 100 percent about what’s going on” Foster said. “I know my body and I knew it wasn’t a huge issue. I just had to give it time. Before the season y’all pressing for news so it was one of those stories.” Highlights from Foster’s media session: Foster was dealing with two separate injuries (back and calf) that weren’t related. He wouldn’t specify how he hurt his back only saying “hard work.” Foster on needing preseason reps: “I’m not a huge fan of preseason. But I feel like I’ll be ready for Sept. 9 without any reps. I know game speed. I just have to get myself back and acclimated for football. But I’ll be fine.”