Danny Hope and his coaching staff have a recruiting board where they rank prospects.
The top of the wish list at each position starts with "1" and often can have 1.1, 1.2, etc. Those types of players are elite, the kind who can start immediately.
Of the 21 oral commitments Hope said Purdue has gotten to this point for the next class, there are players who fit that top-tier position.
"We've landed a lot of guys in this recruiting class that were 1.0 or 1.1s, very, very top guys that were on our board for us when this started out several months ago after we've sifted through and came out of the spring evaluation period," Hope said.
"We still have several spots to fill, but we're filling up fast. We like their caliber."
Hope said he'd like to get 25 or 26 players in this class. He said he typically holds a scholarship just in case another player emerges after the February signing date.
"We've got to continue shopping," Hope said.
Hope can't discuss specifics about recruits until they sign a letter of intent.
The most recent commits are Daytona Beach (Fla.) Mainland High School teammates -- O.J. Ross, Ricardo Allen and Chevin Davis. They made their commits Monday, according to the Orlando Sentinel.
Ross is a rivals.com four-star receiver with 4.4 speed. Davis also is a receiver. Allen is a three-star cornerback.