A game of quarterback musical chairs was played across the NFL the past couple of weeks, with Drew Lock (Seattle), Matt Ryan (Indianapolis), Deshaun Watson (Cleveland), Carson Wentz (Washington), Russell Wilson (Denver) and Marcus Mariota (Atlanta) finding new homes through trades and several veteran passers signing free-agent deals with new teams (Teddy Bridgewater with Miami, Mitch Trubisky with Pittsburgh, Jameis Winston with New Orleans, etc.) Teams left without a chair when the music stopped (though Jimmy Garoppolo and Baker Mayfield are still whistling in the wind) are now focused on the top quarterbacks in the upcoming draft class. This week, NFL Network covered the pro days of Matt Corral (Ole Miss), Kenny Pickett (Pittsburgh), Desmond Ridder (Cincinnati) and Malik Willis (Liberty). Next Monday, Sam Howell (North Carolina) will throw for NFL personnel evaluators. These young passers are talented. Like all college prospects, they have areas of their game in which they need to improve. The following four-round mock draft, however, presents my case that they are all worthy of first-round selections.