No. 21 Oregon's defense an emphasis heading into season

FILE - Oregon guard Will Richardson (0) drives against Arizona guard Pelle Larsson, left, during the first half of an NCAA college basketball game Feb. 19, 2022, in Tucson, Ariz. Streaky-shooting guard Richardson is back and expected to take on a leadership role. (AP Photo/Rick Scuteri, File)

FILE - Oregon guard Will Richardson, center, shoots as Arizona State center Enoch Boakye (14) looks on during the first half of an NCAA college basketball game, Thursday, Feb. 17, 2022, in Tempe, Ariz. The Ducks return three starters, including guard Will Richardson who led the team in scoring and assists. (AP Photo/Matt York, File)

FILE - Oregon head coach Dana Altman yells at his team as they play Utah State in the first half of a National Invitational Tournament college basketball game Tuesday, March. 15, 2022, in Logan, Utah. Oregon heads into the season ranked No. 21 in the preseason AP Top 25. The Ducks are focusing on defense and rebounding, where coach Dana Altman said the team was lacking last season. (Eli Lucero/The Herald Journal via AP, File)