HOUSTON (AP) — Sage Rosenfels always believed he could be a starter in the NFL.

On Sunday he proved his case.

Rosenfels threw for three touchdowns to lead the Texans (6-7) to a 28-14 win over the Tampa Bay Buccaneers. He has won both games he’s started in place of the injured Matt Schaub.

Rosenfels lost two fumbles, but Tampa Bay (8-5) was only able to convert one into points.

“Sage has the desire and the goal to be a starter in this league,” coach Gary Kubiak said. “He’s always taken advantage of opportunities. … he took a big step forward in his career today.”

Rosenfels had started just two games in his seven-year career before this season.

“As a backup, you know sooner or later you’re going to get a chance and you just have to make the most of it,” he said. “I personally feel I am good enough to start in this league. But that’s not something I can control.”

The Buccaneers could have secured the NFC South title with a win, but instead their four-game winning streak ended because of miscues and ineffectiveness.

“Four game win streak or one game win streak, it really doesn’t matter,” defensive end Gaines Adams said. “We just didn’t get it done. Everything we did today was unacceptable.”

They started Luke McCown as Jeff Garcia missed his second straight game with a bruised back. McCown had a big game last week in a win over New Orleans, but was sacked four times and harassed for most of the day in this one.