PHILADELPHIA -- LeSean McCoy didn't want to talk about the Philadelphia Eagles' running game after he gained 17 yards on the ground in San Francisco Sunday. By Wednesday, McCoy wasn't much more enthused about the topic.

"I'm not sure," McCoy said. "I'm just not getting it done. I don't know what else to tell you."

The use of the first-person singular is admirable. McCoy was quick last season to credit his blockers for helping him lead the NFL in rushing. And everyone knows the Eagles' offensive line barely resembles that group because of injuries. Right tackle Lane Johnson has returned from his four-game suspension for performance-enhancing drug use, the first good news for the line in months.

"I got my boy Lane back," McCoy said. "We'll find out. We'll see what happens. That helps. I'm used to the guys and I know how they block. Last year, I had the whole entire line healthy for 16 games. They did tremendous. I'd love to stand up here and tell you what's going on, but the truth of the matter is we're not getting it done."

McCoy is frustrated, but not discouraged.

"I'm confident in my game," McCoy said. "I know who I am. The teams that we play, they know what type of player I am. So that doesn't bother me. I can't answer the reasons why we can't get the running game going. I'm not going to fight that battle. It is what it is. Hopefully, it changes. I still prepare the same way."

McCoy only ran the ball 10 times Sunday, his lowest total of the season. But the Eagles only ran 56 offensive plays and held the ball for under 18 minutes. So there simply weren't as many opportunities to establish the run.

Against St. Louis Sunday, the Eagles will try some new approaches to get their run game going.

"We have some different plays that we're working on this week," McCoy said. "But a lot of it is just executing. Getting the backs on one-on-one matchups. That's what we're best at."