St. Louis ? One week into the season, the St. Louis Rams have a quarterback controversy.

Kurt Warner’s comeback got off to a rocky start when he played through a concussion in the season-opening loss to the New York Giants.

Healthy or not, he won’t start Sunday against the San Francisco 49ers. Marc Bulger will.

Warner, the two-time MVP, said he felt fine Monday, a day after his fog-induced, error-filled performance in the 23-13 loss. After being released from a New York hospital earlier Monday, Warner ran and worked out in St. Louis, and he wants to play Sunday.

Doctors in New York told Warner he probably could practice Wednesday, although team medical personnel will be more cautious.

“I think I should play,” Warner said in a conference call with reporters. “As long as the doctors clear me, I’ll be ready to go.”

Not so fast.

Coach Mike Martz blames himself for allowing Warner to slowly clear his head while fumbling six times and getting sacked six times and said he’d take a safety-first approach Sunday. So Bulger, the backup who was 6-1 as the Rams’ starter last year, will get the call.

“This week I’m going to play Marc,” Martz said. “I think we can go one week and make sure. He’s upset about probably going with Marc, but I think it’s probably the best thing at this point.”

Martz said it was too soon to talk about whether it’s still Warner’s job to lose.

“I don’t want to get into all of that right now,” Martz said. “Let’s just take it one week at a time at this point.

“I don’t know what the medical staff will say at the end of the week and I don’t know how he’s going to be at the end of the week, so if that ever becomes an issue we’ll address it.”

Warner, the MVP in 1999 and 2001, was 0-6 with three touchdown passes and 11 interceptions last year while missing time with a broken pinkie and hand. He doesn’t appear worried about the competition.

“This isn’t about me and Marc, this is about the team,” Warner said. “This is about doing what’s best for our team.”

Warner’s status far overshadowed several other concerns at Rams Park, relegating Martz’ questionable play-calling to the second half of his weekly news conference. Martz disdained field goals twice on fourth-and-long in the fourth quarter, decisions that haunted him the following day.

“It’s probably as bad a game as I’ve called since I’ve been here,” Martz said.

The Rams believe Warner’s concussion occurred on the first sack, which came on their second pass play when Giants lineman Michael Strahan collared him and stripped him of the ball with 8:34 to go in the first quarter.

On his first seven pass plays, Martz said Warner made five errors in judgment.

“He hasn’t done that his whole time here,” Martz said. “It’s just not like him.”