49ers centers: Better, worse, or same in 2017?

The San Francisco 49ers face a lot of questions surrounding their roster in 2017, with the new front office and coaching staff bringing numerous changes. It is going to take some time to figure out where this team stands. The team was incredibly active in free agency, and followed that with plenty of work in the 2017 NFL Draft.

With that in mind, I thought we would take a look at each position, compare it to various points last year, and consider whether the unit is better, worse, or the same compared to last year. The table includes the current group of players, and then a list of players on the 90-man roster for the first preseason game, the players on the Week 1 53-man roster, and the…