PHILADELPHIA - Eagles general manager Howie Roseman has been so active in acquiring players, rumor has it he does his grocery shopping at Trader Joe's.

He made his sixth trade of the offseason/preseason Friday, this time sending under-achieving running back Felix Jones to Pittsburgh in exchange for outside linebacker Adrian Robinson.

It was the sixth swap Roseman has made since March 15.

The series of trades have included four player-for-player exchanges. Previously, the Eagles acquired defensive end Clifton Geathers from Indianapolis for fullback Stanley Havili, linebacker Emmanuel Acho from Cleveland for running back Dion Lewis and wide receiver Jeff Maehl from Houston for offensive lineman Nate Menkin.

Jones' health has been an issue. He has missed time during Eagles' training camp with a strained hamstring and suffered a strained oblique in an Aug. 16 preseason game against Carolina.

For Robinson, the trade means a homecoming. The Harrisburg, Pa., native was a four-year starter for Temple University, which plays its home games at Lincoln Financial Field. As a sophomore with the Owls, he was the MAC Defensive Player of the Year.

The 6-foot-1, 250-pounder made the Steelers' roster last season as an undrafted rookie. He played on special teams in 12 games for the Steelers. He was vying for a backup role this season behind starting outside linebackers LaMarr Woodley and Jason Worilds. Pittsburgh also selected outside linebacker Jarvis Jones in the first round of the NFL draft.

In his preseason, Robinson collected four tackles and recovered a fumble in the end zone for a touchdown against the New York Giants.

Jones would have had trouble making the Eagles' regular-season roster.

He signed a one-year contract as a free agent after spending five seasons with Dallas, but those nagging injuries prevented him from making much of an impression. Meanwhile, undrafted rookie Matthew Tucker and second-year player Chris Polk have played well in their bid to earn backup spots behind starter LeSean McCoy and Bryce Brown.

Tucker has overcome a slow start in training camp to be one of the Eagles' bright spots. A former standout at Texas Christian University, Tucker failed the team's conditioning test before camp and missed a few days. But the 6-1, 227-pounder has come on strong lately. He enters Saturday night's preseason game at Jacksonville as the Eagles' leading rusher with 59 yards on 15 carries (3.8 yards per carry).

Jones ran for 45 yards on 12 carries (3.8 yards per carry). He rushed for 14 yards on four carries against the Panthers before getting hurt.

McCoy will get most of the carries tonight. Eagles coach Chip Kelly plans to play his starters the entire first half against the Jaguars and possibly a series or two in the third quarter.

"We'll be monitoring those guys to see how many snaps they're getting and if they're getting enough work," Kelly said Thursday. "You kind of have a ballpark of what you want to do, but you don't know how it's going to turn out. If we have a lot of three-and-outs in the first half, then you've got to give them a lot of reps in the third quarter. If you get a lot of reps in the first half, then you may back off."

If guard Todd Herremans (knee inflammation) plays tonight, it will be the first time the Eagles' starting offense will play together during the preseason. Left tackle Jason Peters missed the first two preseason games while nursing a strained hamstring.

And the starters will play with just one quarterback.

Earlier in the week, Kelly anointed Michael Vick as the starter for the regular season, starting with their opener at Washington on Sept. 9. Nick Foles, who had alternated snaps with Vick in the first two preseason games, will play with the backups tonight.

"I'm going to have the opportunity to do what I want to do in this offense and run the football," Vick said Thursday. "And yes, I will be a threat."

A rigorous training regimen has prepared him for the physical grind of a season. Kelly indicated that Vick trains harder and longer than anyone on the team in the weight room at the NovaCare Complex.

As a result, the 32-year-old quarterback gained 4 pounds of muscle and still maintained his speed in an effort to avoid the injuries that have plagued him during his career.

"This is 220 pounds you're staring at right here, soaking wet," Vick said with a laugh.

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