Perry also ran for 60 yards against the Roadrunners. That mobility - he has 92 rushing yards on the year, compared to Brown's minus-74 - is an extra dimension the Blazers can use, tight end Kennard Backman said.
"J.P.'s always been a good player. Him bringing his feet and his speed onto the field really is an advantage. Anytime something may break down, he's able to get extra yards," Backman said.
"Having him back there under center definitely is an advantage."
Yet Holliday and the Herd (5-3, 3-1 C-USA) don't imagine the Blazers will completely abandon their running game, not with the 1-2 punch of Darrin Reaves and Jordan Howard in the backfield.
The junior Reaves (5-foot-10, 201 pounds) and freshman Howard (6-1, 228) have combined for 1,328 of UAB's 1,422 rushing yards this season.
The Herd remembers the 184 yards and two touchdowns Reaves gained against it in last season's 38-31 UAB win (McGee said much of that came from draining the clock to preserve what had been a 31-7 lead). They also know that power running games have given the Herd defense some trouble. Marshall allowed 208 rushing yards to Florida Atlantic and 308 rushing yards to Middle Tennessee.
"(Reaves) is a physical guy that will run through you," Holliday said. "You're not going to arm tackle this guy. He's going to run through arm tackles and Howard is the same way. Howard is actually a little bigger than and just as physical as Reeves. It will be important that we wrap up and tackle these guys. We've done a pretty good job of that all year and it's going to be critical that we continue that on Saturday."
Contact sportswriter Derek Redd at derek.r...@dailymail.com or 304-348-1712. His blog is at blogs.dailymail.com/marshall. Follow him on Twitter @derekredd.