"We're getting . . . more plays off because the guys have a better understanding of the mechanics of it," Kelly said. "Our guys are more comfortable with how we want to operate."
Kelly's practices last spring were a jolt to an organization that had spent 14 years under Andy Reid. The playlist has some additions this spring, but the in-practice music that blares from speakers now blends into the two-hour sessions. Kelly sprints from drill to drill, with practice delineated by "teach" periods, seven-on-seven drills, and full-team work. Dozens of players switch fields as if they're on a line change in hockey.
The Eagles have been training for more than a month, but this is the first week that the offense has been able to practice against the defense. Most of the players are practicing. Wide receiver Jeremy Maclin is back from a torn anterior cruciate ligament that sidelined him in 2013, there are no controversial absences, and the quarterback situation is settled. (There is even an undrafted rookie wearing DeSean Jackson's No. 10. Life really does move quickly at the NovaCare Complex.)
One year ago, Nick Foles and Michael Vick split first-team snaps. Foles has since been anointed the starting quarterback, with a Pro Bowl campaign under Kelly boosting his profile in the organization and around the league. He now takes all the first-team snaps; Vick moved on to the Jets.
Foles did not know how he would fit into Kelly's system last spring. The uncertainty is gone. His understanding of the offense enhances the entire practice. He also speaks with more authority and confidence about his role on the team.
"Last year at this time, we were trying to learn the offense," Foles said. "It was very vanilla, and every day was a learning curve. Right now, there's a lot more stuff in, and guys are a lot more comfortable running what we have. We're adding more. It's just a comfort zone with everybody. And we can really go fast."
The depth chart is also easier to predict. Kelly joked last year that there was no depth chart, only a "seating chart," because the coaching staff needed to become familiar with the players. That is no longer an issue.
Jackson, Patrick Chung, and Jason Avant were the only starters who departed. There is still competition for roster spots, but most of the depth chart can be written in pen.
"Obviously if we had to go play a game, we know who is going to play right now," Kelly said.
Foles conceded that it was not just the coaches trying to figure out the players last year, but also the players trying to understand the coaches. Kelly replaced almost all of Reid's staff.
Kelly no longer faces questions about his methods, either. After an NFC East crown, a record-breaking offense, and a regular season without placing a player on injured reserve, Kelly's up-tempo system and emphasis on sports science are accepted. This spring requires only refinement for the 58 players who are back in Philadelphia and a rapid introduction for the rest.
"It's about acclimating the new guys that just got here in terms of learning the system," Kelly said. "For the guys that have been here for a year, been in the system for a year, it's how can we get better as an individual."