Tennessee Titans (2-8) at Philadelphia Eagles (7-3)

Sunday, 1:00 p.m. ET, at Lincoln Financial Field, Philadelphia – TV: CBS

*TV announcers: Greg Gumbel, Trent Green, Evan Washburn

*Keys to the game: It’s pretty transparent that Titans coach Ken Whisenhunt is using the second half of the season as a platform for rookie Zach Mettenberger to prove himself as the team’s long-term answer at the position. Holding a 13-point lead at home on Monday night, Whisenhunt continued to dial up pass after pass, with Mettenberger finishing with 24 attempts while rookie RB Bishop Sankey received just 11 carries.

Granted, the secondary is the clear weakness of the Steelers’ secondary, and the Eagles are coming off a game in which they gave up 367 yards and three touchdowns through the air at Green Bay. But Whisenhunt must also be mindful of his 31st-ranked run defense that watched Le’Veon Bell shove the ball down the Titans’ throat to end the game.

Philadelphia has an NFL-high 25 turnovers and needs to get RB LeSean McCoy (3.7 yards per carry) untracked to help protect pick-prone QB Mark Sanchez.

*Matchup to watch – Titans WR Justin Hunter vs. Eagles CB Bradley Fletcher: Fletcher was targeted 13 times by the Packers, giving up eight completions for 169 yards and two touchdowns. He was nearly benched, but coordinator Bill Davis commended Fletcher’s resolve in the second half. Hunter has just 23 receptions on the season, but is averaging 18.1 yards per catch and is a big-play weapon Mettenberger is developing chemistry with.

*Player spotlight – Eagles TE Zach Ertz: After playing 64.5 percent of the snaps through the first four games, Ertz has played only 41.7 over the past six as coach Chip Kelly has increasingly relied on Brent Celek, who is a superior blocker. But Ertz could see an uptick in playing time after Steelers TE Heath Miller caught all five of his targets for 71 yards Monday.

*Fast facts: The Titans have allowed an average of 28.5 points in losing their past four home games. … McCoy has averaged 111 yards from scrimmage over his past 11 home games.

WHO WILL WIN AND WHY

Mettenberger has a strong arm Whisenhunt wants to develop, but the lack of establishing the ground game behind an offensive line with a lot of resources poured into it makes it difficult for Tennessee to finish off games. That, and the Eagles have a nine-game home winning streak.

*Our pick: Eagles 30-20