HENDERSON, Nev. -- Marcus Mariota was putting on a show early in training camp, much like he did in relief duty for the Las Vegas Raiders late last season.
His passing was on point, his command of the offense preternatural. And there were his legs, his ability and, yes, desire to run.
"He looks like the Galloping Ghost out there," said Raiders coach Jon Gruden.
And just like a specter, Mariota vanished.
He tweaked a leg in a scrimmage at Allegiant Stadium on Aug. 8 and, until suiting up and warming up before Saturday night's exhibition opener, Mariota had not been seen on the practice field by reporters.