NFL 1st and Goals Brian Webber and Eric Allen are joined by Chuck Nice and Dr Eric Goff for the Playing With Science Checkdown. Saquon Barkley helped put an exclamation point on the beatdown of the NFC East rival Washington Redskins. It took just one cut and Barkley was gone for 78 yards. For this Playing With Science Checkdown, Dr Eric Goff describes just how quick Barkley's feet were on the play.