Dre Greenlaw had a big showing in the San Francisco 49ers’ season-opening win over the Detroit Lions this past Sunday. However, it will be the last time the former Arkansas linebacker takes the field for a while.

According to Matt Barrows of The Athletic, Greenlaw is undergoing a procedure to heal a groin injury. It won’t be a season-ending surgery, though, as Barrows added that Greenlaw is expected to miss 4-6 weeks.

Still, it’s a disappointing development for Greenlaw, who got off to an impressive start in his third NFL season. He started and had 6 tackles and a 39-yard interception return for a touchdown. It was the first TD of his professional career.

Greenlaw has been with the 49ers since 2019, when they took him in the fifth round of the NFL Draft. He previously had spent 4 seasons at Arkansas from 2015-18.

This won’t be the first time Greenlaw will be out due to injury since arriving in San Francisco. Last season, he missed 3 games because of a quad ailment.

Once Greenlaw gets back on the field, he’ll try to pick up where he left off in Week 1. He just may not be able to do so until late October.