Thomas leads No. 3 Buckeyes early, 91-45 AP 11/24/2012 1:09:55 AM (AP) Thomas leads No. 3 Buckeyes early, 91-45By RUSTY MILLERAP Sports WriterCOLUMBUS, OhioDeshaun Thomas scored 15 of his 21 points as No. 3 Ohio State coasted to a huge first-half lead on the way to a 91-45 victory against overmatched Missouri-Kansas City on Friday night.The game was the final tuneup for the Buckeyes (4-0) before their ACC/Big Ten Showdown matchup against No. 5 Duke at Cameron Indoor Stadium on Wednesday night.Lenzelle Smith Jr. added 13 points and LaQuinton Ross and Sam Thompson had 11 apiece as Ohio State experimented with subs for almost the entire second half.Estan Tyler and Thomas Staton each had seven points for the `Roos (2-3).