The 49ers’ 90-man roster has taken shape, and camp battles are already developing on paper with organized team activities due to open May 20.

Some positions won’t have a lot of competition. Jimmy Garoppolo is locked in at the top of the depth chart. So are players like George Kittle and Dee Ford. Other spots will have a ton of competition based on the personnel on the roster going into OTAs. This is our seven-part series on the biggest roster battles we’ll have an eye on throughout the offseason.

A quality backup tight end is paramount in a 49ers offense that values deception through personnel groupings. Having a second tight end who can block effectively, but be enough of a receiving threat that teams have to account for him in the passing game is essential.

Last season the job was Garrett Celek’s to lose, but this year should bring more competition to that spot. Here’s what the battle for the No. 2 tight end spot looks like going into the offseason program:

The contenders

(Photo by Thearon W. Henderson/Getty Images)

Garrett Celek – Year 8
Kaden Smith – Rookie
Ross Dwelley – Year 2
Levine Toilolo – Year 7