DALLAS - University of Oklahoma freshman Teyon Ware was named the Big 12 Wrestler of the Week for his performances during the week of Jan. 13-19, the conference announced Monday.     The Edmond, Okla., native had an outstanding weekend at the Cliff Keen/NWCA National Duals in Columbus, Ohio. Ware, who was ranked 16th nationally in the 141-pound division heading into the meet, recorded upset wins in three of the four matches he competed in last weekend. The most impressive victory came against top-ranked and defending national champion Aaron Holker of Iowa State. Ware won by decision 3-1 in the stunning defeat.     In addition to defeating Holker last Saturday, he knocked off No. 12 Shane Cunanan of West Virginia 7-4, pinned Iowa's Luke Moffitt by fall in six minutes and 48 seconds, and defeated No. 2 Zack Esposito of Oklahoma State 5-5 in double overtime.     Ware has compiled a 10-1 overall and dual record and is 1-0 in the Big 12.     His team (9-4), who was unseeded at the Duals, posted a runner-up finish and a 3-1 record. OU defeated the No. 6 seed West Virginia (20-18), Iowa State (19-15), and the No. 2 seed Iowa on near fall criteria (18-18) before falling to in-state and league rival top-seeded Oklahoma State (27-6) in the finals.     Ware and the Sooners return to action when they host Oregon State and Oregon Friday. Oklahoma will wrestle Oregon State at Harrah (Okla.) High School at noon and Oregon in the Howard McCasland Field House at 7 p.m.     2003 BIG 12 WRESTLERS OF THE WEEK  Jan. 6: Shane Roller, Oklahoma State  Jan. 13: Travis Shufelt, Nebraska  Jan. 20: Teyon Ware, Oklahoma