Few things are certain in the NFL, but it's beginning to look like one of those is a Dwayne Allen touchdown.

Allen has four touchdowns through five games, and the one game without a touchdown came in Week 2 when he recorded no targets against the Philadelphia Eagles.

The Clemson product has had at least three receptions in each game other than in Week 2. His production without the touchdowns (3.8 receptions and 51.0 yards) is pretty much what you'd expect from a tight end flier, and he's realizing some serious touchdown potential.

Houston has been pretty stout versus the tight end, but those results have been skewed by games against the Raiders and Bills, who don't boast much of a threat at tight end.