Titans rally from 10 down at half, edge 49ers 20-17

Tennessee Titans wide receiver A.J. Brown (11) makes a catch as he is defended by San Francisco 49ers cornerback Ambry Thomas (20) in the second half of an NFL football game Thursday, Dec. 23, 2021, in Nashville, Tenn. (AP Photo/Mark Zaleski)

San Francisco 49ers quarterback Jimmy Garoppolo (10) throws as he is pressured by Tennessee Titans defenders in the second half of an NFL football game Thursday in Nashville, Tenn. (AP Photo/Wade Payne)

Tennessee Titans wide receiver A.J. Brown (11) celebrates after scoring a touchdown against the San Francisco 49ers in the second half of an NFL football game Thursday, Dec. 23, 2021, in Nashville, Tenn. (AP Photo/Wade Payne)

Tennessee Titans kicker Randy Bullock (14) watches his 44-yard field goal in the final seconds of the fourth quarter of an NFL football game against the San Francisco 49ers Thursday, Dec. 23, 2021, in Nashville, Tenn. The field goal gave the Titans a 20-17 win. (AP Photo/Wade Payne)

Tennessee Titans wide receiver A.J. Brown (11) catches a touchdown pass as he is defended by San Francisco 49ers cornerback Josh Norman, left, in the second half of an NFL football game Thursday in Nashville, Tenn. (AP Photo/Mark Zaleski)

NASHVILLE, Tenn. — Coach Mike Vrabel heard that his banged-up Tennessee Titans were being written off after the left side of their offensive line was ruled out a day before hosting the streaking San Francisco 49ers.