NFL injury tracker Week 2: Christian McCaffrey out, Tee Higgins doubtful, A.J. Brown questionable

Key injuries to monitor heading into Week 2 of the NFL season

Christian McCaffrey out for Week 2

Christian McCaffrey will miss the Carolina Panthers' Week 2 matchup against the New York Giants due to an ankle injury, according to a source. McCaffrey suffered the injury in the Panthers' Week 1 win over the New York Jets. He is expected to miss multiple weeks.

Tee Higgins doubtful for Week 2

Tee Higgins is doubtful to play in the Cincinnati Bengals' Week 2 game against the Dallas Cowboys due to a hamstring injury, according to a source. Higgins suffered the injury in the Bengals' Week 1 win over the Pittsburgh Steelers. He is expected to miss at least one week.

A.J. Brown questionable for Week 2

A.J. Brown is questionable for the Philadelphia Eagles' Week 2 game against the Minnesota Vikings due to a knee injury, according to a source. Brown suffered the injury in the Eagles' Week 1 loss to the Detroit Lions. He is expected to be a game-time decision.