And in doing so, he may very well be on the verge of an NFL first.
No player has ever won the league's Special Teams Player of the Week award a week after winning Defensive Player of the Week, and it appears McCann is set to do that after his past two big-time performances.
First off, there was last week, when his club-record 101-yard interception return for a touchdown against the Giants gave a 14-point swing that ended up spurring the Cowboys to a resounding victory in their first game since Jason Garrett took over for Wade Phillips as head coach.
Then, in Sunday's win over the Lions — the Cowboys' second straight and first at home this season — McCann had another momentum swinging play.
Trailing 12-7 in the third quarter, and on the ropes against another one of the worst teams in the NFL, McCann got the Cowboys on track en route to a dominant 35-19 win over the hapless Lions with a 97-yard punt return on which he duped the Lions' punt coverage team that had already done a good job of pinning the Cowboys deep with the ol' "bat the ball out of the end zone" play.
Although McCann couldn't find the field when Wade was here, the rookie has made a huge impression on his new, interim head coach.