Chip Kelly didn't sign DeMarco Murray and Ryan Mathews so that the Eagles could throw the ball all over the place. He signed them so he could refocus his offense on running the ball. A lot. Like he did when he was winning games at Oregon.

That much we can gather from the Eagles moves this offseason. That and, when the Eagles do plan on throwing, they have someone capable in Sam Bradford (if Bradford is indeed their quarterback).

At Oregon, Kelly would call running plays north of 60 percent of the time. That would include quarterback rushes but the operation typically revolved around multiple backs splitting up handoffs. Most weeks there would be two backs with at least 10 carries each, some weeks one guy got the majority of the work. And like most football teams, they ran far more than passed in their wins and threw a bunch when they were behind or on their way to a loss.

The Eagles had a similar plan of attack in Kelly's first two years. In 2013 they were very balanced but found themselves throwing more in 2014 due to playing from behind or in close games more often than not. Only once last season did they dominate with the run (Week 13 at Dallas). In every other game they were either balanced or heavily lopsided toward the pass. In wins they averaged 29 rushes by running backs per game, 21.7 rushes per game in losses.

That rushing workload was pretty much entirely on LeSean McCoy's shoulders. Darren Sproles would pitch in a little and Chris Polk found snaps toward the end of the season but McCoy was their main back. Logic would suggest that the Eagles will be more tandem-focused after they dealt McCoy and his 626 carries over 32 games to Buffalo and used up their cap space on Murray and Mathews. And even they can't ignore the fact that Murray had nearly 500 touches last season.

So as Kelly aims to be more run-centric this season, it's probably a goal of his to not run either back into the ground like he did with McCoy. In two seasons his running backs have averaged more than 25 carries per game, which might sound like a lot but we're talking about Eagles offenses that averaged over 65 plays per game in those seasons.

My guess is that Kelly would love to make that average get above 30 running back rushes per game. I think he can do that in favorable and even neutral matchups, but not in difficult matchups, nor in games where the Eagles are chasing points.

How many difficult matchups does the Eagles run game have in 2015? As of now, not a ton. Three road games (Carolina, N.Y. Jets and New England) and three home games (Arizona, Buffalo and Miami) seem particularly tough. Maybe one or two of those are debatable. The rest of their games shouldn't scare anyone.

But they do take on their fair share of competent offenses. The Giants and Cowboys qualify, and the Redskins have given the Eagles a tough time since Kelly went pro. The Cardinals, Bills, Dolphins, Falcons, Lions and Patriots will definitely put up some points. If the Eagles fall behind in those games they might not be able to run as much as they want.

By my count, the Eagles have two games -- home against the Saints and Buccaneers -- that could be one-sided run-dominant laughers.

Of course, these defenses aren't stupid. If we can figure out how badly the Eagles want to run, they can too. You have to imagine that Philly's opponents will line up expecting a big dose of the run while testing their passing game with Bradford throwing to Jordan Matthews, Zach Ertz, etc. Philadelphia's offensive line will have some questions to answer after releasing one guard and potentially trading another.

Tack on Murray and Mathews' injury histories and we can't expect radical seasons for either back. I might ballpark Murray at around 17 carries per game with a couple of grabs each week. There will be games he gets more work (those two home games should be big for him, plus matchups against the Cowboys will have him fired up), but there's no doubt he's not going to get as much work. Who knows how long he'll fight off injuries after getting knocked around last season? Anyway, so long as Murray is active, Mathews should end up closer to eight carries per game, and bank on Sproles pitching in more as a pass catcher than as a rusher. He'll be lucky to average 10 touches per game.

Obviously Murray will be the most reliable for Fantasy and Mathews will end up as his handcuff but pairing both might take two of your first eight picks. That's a big price to pay for a backfield that will cause some headaches throughout the season. Murray, if projected for 14 games, could still end up on the right side of 1,200 total yards and nine touchdowns, which my initial projection has him getting. Mathews and Sproles wouldn't be nearly as good -- maybe 600 total yards for each with Mathews a better bet to score more.

I'm not sure how many people would be amped to draft Murray with a first-round pick but I'm not one of them. If I get him in Round 2, great. If not, I'm not really sweating it. It almost feels like I'm doing my Fantasy team a favor by passing on Eagles running backs.