Texans RB Arian Foster, the league's top rusher last season, tweaked his hamstring and had to leave the team's preseason game vs. the 49ers on Saturday night.
Foster has been bothered by a hamstring injury throughout training camp and he said after the game that the injury was a "re-aggravation of what I already had."
After some concern that the injury would prevent Foster from playing in Week One of the regular season, the Texans star released a message via Twitter to all those concerned about his health.
"4 those sincerely concerned I'm doing ok plan 2 B back by opening day," Foster wrote. "4 those worried abt your fantasy team, u ppl are sick."