ESPN's Adam Schefter reports Caleb Williams has a Grade 2 hamstring injury "that doctors say could sideline him for three to four weeks."

The Charlotte Hornets announced that guard Kon Knueppel and forward Grant Williams will miss all upcoming preseason games after sustaining hamstring injuries during offseason activity.

Here's what we know about Chicago's star quarterback forced out of their Week 2 contest due to injury.

Etienne exited Sunday's 35-27 loss to the Raiders due to an injury to the same hamstring which bothered him in practice leading up to the game, head coach Kellen Moore revealed after the loss, John Hendrix of NewOrleans.Football reports.

Hamstring injuries are among the most common injuries in sports, particularly in activities involving sprinting and rapid acceleration. They account for roughly 10 % of injuries in field-based sports and often result in significant time away from competition.

By Field Level Media Sep 25 (Field Level Media) - Texans standout receiver Nico Collins will sit out his second consecutive game due to a hamstring injury when Houston visits the Indianapolis Colts on Sunday.

Etienne (hamstring) is questionable to return to Sunday's game against the Raiders.

The Philadelphia Eagles are looking to start the season 3-0, and their next matchup will be against a Chicago Bears team missing their starting quarterback. The Eagles are also dealing with some injuries to their offensive players,