The final week of the regular season is upon us as 23rd-ranked Arizona (18-12, 8-10 Pac-12) wraps things up with a visit to Oregon State (5-23, 3-15 Pac-12) on Wednesday before hosting Arizona State (19-10, 8-10 Pac-12) on senior day on Friday. The Wildcats, coming off their biggest win of the season over No. 11 UCLA, find themselves with an RPI of 41 with the NCAA Tournament selection made this Sunday (7 p.m. MST, ESPNU). Arizona will celebrate the careers of four seniors on Friday - Halli Amaro, Nikki Attea, MacKenzie Kleespies and Anna Panagiotakopoulos. Amaro, UA's lone four-year senior, is on pace to leave Arizona with more sets played than anyone in school history.