Texans running back Arian Foster was tweeting MRI exam results on his injured hamstring to his legions of fans and fantasy football types at this time last season. He won't have Houstonites and others on pins and needles going into the opener this season, even after leaving Thursday's practice with a knee injury the team said was minor. "He's OK," coach Gary Kubiak said Thursday. Foster and the Texans fully expect the running back to be in the lineup against the Miami Dolphins. The former undrafted free agent signed a five-year, $43.5 contract in March. He has 2,857 rushing yards in the past two seasons, including 1,224 yards and 10 touchdowns in 14 games in 2011. He spent most of the 2009 season on the practice squad before breaking in the lineup with 216 rushing yards and three touchdowns in the final two games.