PITTSBURGH — Backed up deep in their own territory, their slow start to the season in danger of turning into a legitimate freefall, the Pittsburgh Steelers did what they always seem to do when things get tight.
Ben Roethlisberger converted a pair of critical third downs during a remarkably patient 64-yard drive over the final 6:33 and Shaun Suisham drilled a 34-yard field goal as time expired to lift the Steelers to a 16-14 victory over the Philadelphia Eagles in the rain on Sunday.
‘‘We had the ball last,’’ Pittsburgh coach Mike Tomlin said. ‘‘Such is life.’’
It’s a way of life the Eagles had grown comfortable with during the season’s opening month. Philadelphia (3-2) appeared on the verge of its third 1-point win of the season when Michael Vick hit Brent Celek for a 2-yard score midway through the fourth quarter.
The Steelers (2-2) started at their own 20, and then promptly went backward thanks to a holding penalty.
Roethlisberger hit Antonio Brown for 20 yards on third and 12. A 15-yard screen pass to running back Rashard Mendenhall — making his return from surgery to repair a torn ACL in his right knee — moved Pittsburgh into Eagles territory.
Two plays later Roethlisberger found Emmanuel Sanders for an 7-yard gain, and five straight runs put the Steelers well within Suisham’s range. The kick was good all the way, and the Steelers avoided their first 1-3 start under Tomlin.
‘‘I always have confidence in myself and the guys that we can do it,’’ said Roethlisberger after engineering his 25th career fourth-quarter comeback. ‘‘It’s good to go down. That was everybody on that drive.’’
Roethlisberger completed 21 of 37 passes for 207 yards, and Mendenhall finished with 81 rushing yards and a score while adding 20 receiving yards as Pittsburgh’s beleaguered running game showed signs of life after its bye week.
‘‘Our savior is back,’’ Roethlisberger joked. ‘‘We've been teasing him all week. It was great to see him out there and he did a great job.’’
Vick completed 20 of 30 passes for 175 yards and two scores but fumbled twice for the Eagles, who couldn’t keep their string of narrow victories going. LeSean McCoy rushed for 53 yards, and caught four passes for 27 yards and a touchdown for Philadelphia.
‘‘You’re going to need to score more points, going to need to help our defense out a lot more,’’ Vick said.
The Eagles trailed the whole way before putting together a 17-play, 79-yard drive at the start of the final quarter, converting a pair of fourth downs, including one deep in their own territory. McCoy turned both into first downs.
Still, the Steelers prevented the Eagles from making big plays. Philadelphia’s longest gain was all of 24 yards and Pittsburgh forced Vick to fumble three times — including one into the end zone that linebacker Larry Foote pounced on.
‘‘Our defense stood up today,’’ said Steelers linebacker Lawrence Timmons. ‘‘We really needed this win.”