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(AP) -- Defending champion Penn State has three top seeds, all of them unbeaten, in the NCAA wrestling tournament.

Frank Molinaro is 28-0 at 149 pounds, David Taylor is 27-0 at 165 pounds and Edward Ruth is 26-0 at 174 pounds for the Nittany Lions, who are ranked No. 1 in the country under former four-time NCAA champion and Olympian Cael Sanderson heading into the three-day, sold-out event that begins Thursday morning.

Minnesota is ranked second and Iowa third, with Oklahoma State, Cornell and Missouri, coming off a Big 12 championship in its final year before moving to the SEC, also fielding strong teams.

Missouri is the only school in the tourney to qualify in all 10 weight divisions, but has only two seeds.

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