Vernon Davis (Maryland) tied the NFL record for touchdown receptions by a tight end with his 13th of the season, leading the visiting San Francisco 49ers to a 28-6 victory over the St. Louis Rams. Davis tied the mark set by the San Diego Chargers' Antonio Gates last season with the longest catch of his career, getting behind the defense on a 73-yard reception from Alex Smith that put the 49ers ahead 14-6 midway through the fourth quarter.

BROWNS: Former Ravens running back Jamal Lewis hasn't ruled out a return to the NFL, even though he is still suffering from headaches and blurred vision as a result of a concussion that ended his season. Lewis says he must receive clearance from doctors before contemplating a return. There is no timeline for when he could - or even would - be cleared. "It's sort of a yes, no, maybe so," Lewis said. "After I get finished doing what I have to do with the concussion process and get everything straight on top, then I can make a solid decision." Lewis' season ended Dec. 2 when he was placed on injured reserve with postconcussion symptoms, but he revealed Sunday that he actually suffered the concussion in the season opener. After the headaches and vision problems worsened, Lewis went to see doctors. That's when he learned the severity of the injury. Lewis carried 143 times this year for 500 yards; he has rushed for 10,067 career yards.