Willis is not in uniform for Saturday's preseason game against the Giants, David Furones of the South Florida Sun Sentinel reports.
Willis played in the Dolphins' preseason opener against the Commanders on Friday, Aug. 14, when he completed four of five passes for 43 yards while adding two carries for nine yards. He'll observe Saturday's exhibition contest in street clothes. If Quinn Ewers (groin) doesn't play, the Dolphins figure to roll with Cam Miller and Mark Gronowski at quarterback.