Injury roundup: Colts LT Castonzo, RB Mack inactive
Left tackle Anthony Castonzo and running back Marlon Mack are inactive for the Indianapolis Colts.
Quarterback Andrew Luck is returning from a season-long absence behind a shaky offensive line against a defense known for its four-man pass rush.
Titans without OT Conklin
Conklin is returning from a torn ACL suffered at New England in January and came off the physically unable to perform list last week.
The Dolphins are without top wide receiver DeVante Parker (finger).
RG3 inactive, Jackson No. 2 QB for Ravens
Griffin made the final 53-man roster despite being in a crowded QB room led by Joe Flacco and Lamar Jackson, who was a first-round pick in April and is the backup.
Buffalo scratched veteran cornerback Vontae Davis (coach's decision).
Panthers TE Olsen set to face Cowboys
With the Panthers already thin at the position, losing Olsen likely would lead to major alterations in the team's game plan against the Cowboys, who visit Bank of America Stadium for the regular-season opener on Sunday.
Ian Thomas likely would get more reps if Olsen is limited by the injury.
Patriots rookie RB Michel out vs. Texans
First-round pick Sony Michel will not play against the Houston Texans.
Without Michel, Rex Burkhead is likely to play additional reps.
For the Texans, wide receiver Will Fuller is not playing in Week 1 because of a strained hamstring.