The Oakland Raiders wide receiver has 399 receiving yards and four touchdowns from the AFC West side's first six games of the campaign.
The head coach told reporters: "I think he's been more consistent. I think his work habits have improved. I think he's doing a better job of focusing in and understanding what his responsibilities are, what his job is, and he's getting to the right spots.
"When the ball is guided to him, he's made the play. Again, it's really not that complicated. Guys go out there and work, they focus in, and they do their job and when they get the opportunity, they make the play, generally have success."
The Raiders host the Pittsburgh Steelers this weekend.