49ers beat: Offensive line exposed against Steelers’ defense

Offensive line exposed against Steelers' defensePITTSBURGH — After a promising season-opening performance, the 49ers' offensive line looked like a group that hadn't played together much in a 43-18 loss to the Steelers on Sunday.The 49ers surrendered five sacks, quarterback Colin Kaepernick had several run-for-his-life moments, and the running backs were held to 60 yards and averaged 2.6 yards a carry.The 49ers have three new starters, and right guard Jordan Devey, who surrendered the first sack Sunday, was acquired in a trade in mid-August.Harrison, 37, had two tackles and two of Pittsburgh's eight quarterback hits.[...] Kaepernick burned a timeout because he didn't like the defense he saw, which Tomsula said was a wise decision.The 49ers signed Smith to a $40 million contract in hopes he could provide a long-needed deep threat, and his 75-yard touchdown reception in the fourth quarter was the longest of his five-year career.Smith exited with an apparent ankle injury in the fourth quarter and walked with a slight limp to the locker room after the game.Wide receiver Bruce Ellington was inactive after he suffered an ankle injury during the week.Ellington, who missed three...