The Philadelphia Eagles currently have a behind-the-scenes competition going on at the center position.

Offensive linemen Jason Kelce and Isaac Seumalo are both in front running to be the starter, but who will it be by the start of the Eagles 2017 regular season? Here’s the comparision:

Jason Kelce

Kelce is the veteran of the two lineman. He has spent his past six seasons with the Eagles and has started in 78 total games. His experience from playing and chemistry with other offensive lineman on the team have made him a sturdy player up to this point in his career. However, Kelce’s best years are behind him.

Back in 2013, when the Eagles had one of the most prolific offenses in team history, Kelce posed as the No. 1 center in the entire league among all centers. Now, he has recently been graded as one of the lowest despite a trip to the Pro Bowl this past season. At age 29, he isn’t particularly old, but he is certainly at that point in his career where he will begin to see a setback.

Isaac Seumalo

Seumalo was drafted in the 3rd round in the 2016 NFL Draft. His rookie year he started in four games due to illnesses and injuries within the Eagles offensive line. Seumalo brings youthful promise as the Eagles are in need of rebuilding their line. In college, he played at all positions and has said in a past interview that he is comfortable wherever the team needs him. His versatility makes him a good candidate to replace Kelce if or when the time comes.

One of the things that will propel Seumalo toward success in the NFL is simply getting reps. With already four starts as a rookie, he got a glimpse at speed the NFL truly plays at. He will be able to handle more as he gets more playing time and sees more defensive fronts.