On a day when the Bills welcomed back one of their top defensive players, another exited the contest early. Von Miller was carted off the field late in the second quarter, leaving Buffalo without their top pass rusher. The Bills immediately ruled Miller out for the remainder of their Thanksgiving tilt against the Lions, leading to widespread speculation that a major injury had occurred. The initial diagnosis appears to be more positive, however. NFL Network’s Ian Rapoport reports that the team believes Miller suffered a knee sprain, with more tests to come tomorrow (Twitter link). While that news is relatively…