When he saw cornerback Mackensie Alexander in the hallway at Clemson’s WestZone on Monday, defensive coordinator Brent Venables delivered a message to the Tigers’ cornerback.

“You will find out what the heck you are all about. You are about to find out,” Venables said.

If you recall, Alexander told the media during fall camp he was the best cornerback in the nation.

“In my opinion, it’s not even close. I think every guy who talks about Mackensie knows I’m the best corner,” he said.

So when No.10 Clemson hosts No. 6 Notre Dame in Death Valley on Oct. 3, it will be a matchup between the nation’s best cover-corner against the nation’s top wide receiver.

On Tuesday, Venables said Notre Dame wide receiver Will Fuller was the best receiver in college football and that it was not even close.

“He gets my vote for the guys I have watched on tape by a landslide,” the Clemson coach said.

Fuller ranks seventh nationally at 132.3 yards per game. In three games thus far, he has totaled 18 catches for 397 yards and five touchdowns. He is averaging 22.1 yards per catch.

“Fuller is very dynamic,” Venables said. “Fuller is big and really fast. He can go up and highpoint the ball. He runs very good routes and runs in and out of his breaks extremely well. This guy is better than (A.J.) Green.”

That is saying something considering A.J. Green is in the NFL and is one of the best wide receivers in the county.

“I told Mackensie you are not going to see a guy … This will be the best one you have seen, but he will not be the only guy on him,” Venables said.

In all fairness, Clemson’s secondary might be the best one Fuller will have faced to this point, too. The Tigers are allowing just 146 yards per game through the air, have five interceptions and have allowed just one touchdown. Opponents have completed just 43.2 percent of its passes, which ranks third nationally.

Quarterbacks have a passing efficiency rating of just 80.36 against the Tigers’ secondary.

But was there anybody on Louisville’s, App State’s or Wofford’s rosters that compare to Fuller’s size, skill set and ability?

“He might be the best there is,” Venables said.

And that is the message he gave Alexander as he kept walking down the hallway.