The Detroit Lions dropped to 2-13 with a 20-6 setback to the San Francisco 49ers on Sunday afternoon at Candlestick Park.

The loss was the Lions' fifth straight since a last-second 38-37 triumph over the Cleveland Browns on Nov. 22.

Coach Jim Schwartz's group will wrap up its 2009-2010 season by returning home to Ford Field at 1 p.m. next Sunday for a battle of longtime rivals against the Chicago Bears, currently 5-9. That contest also will be televised live on FOX 17.

This Sunday the Lions saw Mike Singletary's San Fran bunch improve to 7-8 by opening up a tight 6-3 game and jumping out to a 13-3 lead on a controversial call, and then rolling from there.

The Lions started the game with a sustained drive under quarterback Drew Stanton that gobbled up more than half the first quarter. Detroit eventually went up 3-0 on Jason Hanson's 27-yard field goal with 7:01 to go in the opener.

The 49ers tied the score at 3-all on a 33-yard field goal by new addition Ricky Schmitt with 0:57 showing on the clock in the first frame. The game remained deadlocked that way during a hard-fought, scoreless second stanza until Schmitt tacked on a 39-yard boot with 2:11 left until intermission for a 6-3 San Fran advantage, which stood up until halftime.

The second half started out with more of the same. The 49ers eventually jumped ahead 13-3 at the 7:17 mark of the third period on Alex Smith's 2-yard touchdown pass to Vernon Davis. Schwartz challenged the play, arguing that Smith's throw was beyond the line of scrimmage, but officials upheld the TD call despite television replays appearing to be to the contrary.

San Francisco took control 20-3 on a 1-yard run by Frank Gore with 1:08 to go in the third.

Detroit closed out the scoring on a 38-yard Hanson field goal with 3:59 left in the game.

The 49ers will shoot for .500 by completing their campaign at the St. Louis Rams next Sunday.