Since being drafted by the Detroit Lions in 2007, superstar wide receiver Calvin Johnson has had the same position coach.

That came to an end when the Lions opted not to renew the contract of Shawn Jefferson this offseason after eight seasons with the team.

Taking Jefferson's place is Tim Lappano, who coached Detroit's tight ends the past four years.

Johnson is still adjusting to the switch.

"At first, I was a little uneasy about it just because I've been with Shawn (Jefferson) my whole career." Johnson said. "But Tim's done a great job so far. I don't know if Tim's been talking to Shawn, but Tim's come out here with some good drills for us, as far as focusing our eyes on the ball and getting our footwork right."

A former wide receiver, Jefferson finished his playing career with the Lions in 2003. His motto, "Stay ready so you don't have to get ready," resonated with his players.

A popular assistant because of his passion and energy, Jefferson never hesitated to participate in drills during practice, often playing the role of a physical cornerback at the line of scrimmage.

Johnson knows it could take some time before the group reaches that same comfort level with Lappano that they had with Jefferson.

"Like I said, we had been together so long, so he could read me," Johnson said. "He could tell what's going on, if I'm in my zone or whatever. So, that's just something that Tim's going to learn from us as he spends time with us."