49ers roster breakdowns, 90-in-90: CB Kenneth Acker

Breaking down the 90 players on the 49ers offseason roster in 90 posts (over 90 or so days). We move on to cornerback Kenneth Acker.

Each year, we run a series of post called "90-in-90" here at Niners Nation. The idea is that we'll take a look at every single player on the roster, from the very bottom to the top and break them down a few different ways. This is to help give everyone a basic understanding of a roster. Of course, this roster will change, and some days we'll have more than one so it's not strictly one per day but you get the idea.

The San Francisco 49ers have seen significant turnover at the cornerback position the last few years. We’ve seen Carlos Rogers, Tarell Brown, Chris…