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Several significant injuries emerged from Sunday's NFL Week 4 games. Ravens quarterback Lamar Jackson left his team's win over the Titans in a boot after hurting his ankle, while Bengals star receivers Ja'Marr Chase and Tee Higgins were both injured in a loss to the Jaguars. Chiefs receiver Tyquan Thornton also suffered a dislocated ankle during Kansas City's win over the Raiders, which doctors popped back into place on the field. The injuries raise concerns for multiple playoff-contending teams heading into the back half of October, with the severity and recovery timelines for Jackson, Chase, Higgins and Thornton still being assessed.