The two veteran wrestlers have combined for a 36-2 record this season.
"You don't look at the postseason and just decide to get ready. You have to be ready and get better every day."
Roman Bravo-Young and Carter Starocci will serve as the Nittany Lions' top-seeded competitors in Tulsa.
The true freshman's win at the Big Ten Championship Sunday propelled Haines to the No. 2 national ranking.