BY CORY SPIERS coryspiers@gmail.com The final score doesn't mean much in the preseason, but, for what it's worth, the Panthers opened their exhibition slate with a 28-23 road win over the Bills this past Thursday night. Cam Newton and a host of limited offensive starters lasted a couple of series in the first quarter before the reserve floodgates opened. The first team offense turned in a particularly underwhelming first series that ended in a Michael Palardy punt but capped off an efficient nine-play, 75-yard drive with a two-yard Christian McCaffrey touchdown run later in the quarter. Carolina's first-team defense got a good chunk of work against the Bills starters in the opening quarter and allowed a 28-yard touchdown connection between Nathan Peterman and Kelvin Benjamin. As is the case with any preseason game, some players saw their stock rise while others saw it fall. Stock rising: DJ Moore : One game (let alone an exhibition game) is an extremely small sa