Houston Texans quarterback Matt Leinart is likely out for the season and will have to undergo shoulder surgery, according to coach Gary Kubiak.

Leinart injured his shoulder in the second quarter of the team's 20-13 win over the Jacksonville Jaguars on Sunday. The loss of Leinart for the season is yet another in a string of injuries to key Texans players.

The Texans had already lost starting quarterback Matt Schaub and star defensive end/linebacker Mario Williams to injuries, as well as Andre Johnson missing six weeks of the season.

The AFC South division leaders are expected to tab rookie T.J. Yates, who replaced Leinart on Sunday, as the team's starter going forward. Yates, out of North Carolina, threw eight completions for 70 yards in the team's win.

Recently signed quarterback Kellen Clemens will serve as Yates' backup, while the Texans will likely look around for at least one more quarterback. Sports Illustrated's Peter King suggested on Monday that Kubiak could look to sign former Chiefs quarterback Brodie Croyle.

There's also the possibility that the Texans look to a 42 year-old Brett Favre, who spent last season with the Vikings, though Favre told King no team has contacted him yet.

It's likely doubtful that the Texans would look to Favre as a replacement -- general manager Rick Smith told King he didn't want to bring the circus to town, -- Kubiak wouldn't rule out any possible replacements during a Monday press conference.

I don't think you rule out anybody ... I'm not going to rule out anybody nor confirm anybody, Kubiak said.