Cleveland Browns: 5 biggest under-the-radar winners of free agency

4. Case Keenum

Before Tom Brady and Phillip Rivers had new homes, the Browns locked down Case Keenum to a three-year, $18 million contract to be the backup quarterback.

Easy money to wear the headset and hold the clipboard. Seriously though, Keenum got a nice contract and will serve as Kevin Stefanski’s safety valve should Mayfield implode in year.

While Mayfield struggled mightily, I think most fans are willing to giving him another chance, casting the former No. 1 overall pick’s poor performance on the inablity of a new coach to rise the challenges of his new job.

Mayfield played in all 16 games a season ago, but as Browns’ fan know, that’s the exception, not the rule. With Keenum in the fold, Stefanski can lean on someone he knows from his Vikings’ days, and the season won’t be lost.

Back in 2017, while Stefanski was an offensive assistant, Keenum posted a grade of 81.4 for the Vikings, which was the seventh-best mark by a quarterback that season.