"Michael Crabtree enjoyed his first career game with two touchdown receptions Sunday, and he couldn't have done it without some fine acting on a fake field-goal attempt.

Crabtree pretended he was leaving the field before stopping a couple of yards shy of the 49ers' sideline. Kicker David Akers then lined up to try a field goal, took a direct snap and chucked a 14-yard touchdown pass to an uncovered Crabtree.

That third-quarter score gave the 49ers a 27-10 lead in their eventual 34-27 victory over the St. Louis Rams.

Coach Jim Harbaugh said the 49ers have been practicing that trick play for 10 weeks, during which time Crabtree said he has told Akers: "Just throw the ball and I got you."

Akers wasn't expecting special-teams coordinator Brad Seely's call for the fake, but it resulted in Akers' first career touchdown pass. It was also Akers' second completion in two attempts -- he had an 11-yard pass in 2006 for the Philadelphia Eagles.

"I looked over and Crab was wide open. I was like, 'Oh my,' " Akers said. "I underthrew him, but he ran a little slant in there and made it look real smooth for me.""