Sellman had 219 kills in 20 matches as a freshman this season.
The Nittany Lions received 90 votes last week.
The top two seeds will meet Sunday night for a spot in the semifinals.
A Nittany Lion vs. a Pony? You know who we got.
Rec Hall will host the NCAA Tournament third round and quarterfinals.
Penn State took away five more steals than Purdue.