There are questions that almost everyone will be asking as Spiller's poked and prodded over the upcoming weeks and months.
Can he be an every down running back in the NFL? Is he durable enough?
"Personally, I believe he's best suited in a one-two punch scenario," said Stebuer, "where he's teamed up with a bigger back, just like he was at Clemson with James Davis, and can surprise the opposition with his speed.
"Sometimes the problem with having an athlete like Spiller is the temptation to use him in every situation; using him as a running back, wide receiver and kick returner," Steuber said. "He has all of those skills and excels at those positions. But Spiller is a top-15 draft pick and the best running back available in April. (Getty Images)
Of course, Spiller has no problems at all be compared to Johnson - who just surpassed 2,000 yards rushing in a single season for the Titans.
"I watch him… I saw him at East Carolina. I was able to watch him a little bit and now I've been able to follow him with the Titans," Spiller told CUTigers shortly before Clemson's 21-13 Music City Bowl win over Kentucky.
At the NFL Scouting Combine in 2008, Johnson turned in a 40-time of 4.24 seconds. Before that, he was projected a second or third-round selection. That time shot his name into the first-round, where he was selected by the Titans with the 24th pick.
Spiller, of course, has similar speed and finished his senior season not only with a degree in Sociology, but with a single season ACC-record 2,670 all-purpose yards, not to mention 7,588 yards for his career - second best in NCAA history.
But as strange as this may sound, Spiller's ability to be used as a receiver, returner and running back could also take away from his overall value, because of questions about his durability.
"Sometimes the problem with having an athlete like Spiller is the temptation to use him in every situation; using him as a running back, wide receiver and kick returner," Steuber said. "He has all of those skills and excels at those positions.
"But Spiller is a top-15 draft pick and the best running back available in April."
Where Spiller ends up is still in the air.
Obviously, no one will really know until April, but there are inklings that he could be reunited with a former Clemson teammate.
"A situation like Cleveland, who already has James Davis on their roster, is ideal at pick seven. So is Seattle at 14 and potentially, if Spiller falls, Pittsburgh at 18," Steuber said.