The 49ers’ offensive line was under heavy scrutiny last season. Outside of Trent Williams and Laken Tomlinson on the left side, every other position presented a giant question mark.
Center and right guard were revolving doors last season due to injuries, and Mike McGlinchey wasn’t playing up to his standards at right tackle.
If Kyle Shanahan’s offense was ever going to take the next step, it had to start upfront with the offensive line. John Lynch addressed it early during free agency, re-signing left tackle Trent Williams while adding veteran center Alex Mack as well.