Derrick Williams had 19 points and six rebounds to lead Arizona to a 70-59 exhibition win over Augustana of South Dakota today at McKale Center.

Although they never trailed their Division II opponent, the Wildcats displayed several weaknesses: They allowed Augustana to make two-thirds of its two-point shots in the first half, made only 20 of 33 free throws for the game and couldn’t easily stop Augustana sophomore guard Cameron McCaffrey.

McCaffrey, of Portland, Ore., sliced and shot his way to 20 points for the Vikings while Kyle Fogg was Arizona's second-leading scorer with 11 points.

The Wildcats were without center Kyryl Natyazhko, who suffered a concussion in practice during the week, while UA coach Sean Miller did not play freshman guard Daniel Bejarano for reasons that went unexplained before the game.

Arizona will open its regular season next Sunday against Idaho State at McKale Center.

Arizona extended its lead past 10 points midway through the second half with the help of two slick passes from Solomon Hill, a flip to Jamelle Horne underneath the basket and a right-handed dish to Williams for an alley-oop dunk that made it 53-40.

But they cruised into the final minutes with barely a double-digit lead and McKale Center quieted as the crowd of about 11,000 began to file out.

In the first half, Williams scored nine points in the first half to give Arizona a 38-31 lead, though the Wildcats struggled defensively.

Augustana made 67 percent of its two point shots, while keeping the game close throughout the first half. Arizona also hurt itself from the free throw line, making just 11 of 20 free throws in the half.

Arizona shot 52 percent from the field and outrebounded the Vikings 18-14, however.

Augustana cut the score to within 24-22 with seven minutes left, but came no closer.

The exhibition was a chance Miller to test out new combinations of players.

Brendon Lavender, Jesse Perry and Jordin Mayes were the first substitutes in the game, after the first media timeout. At about 14 minutes, Miller inserted Kevin Parrom and Alex Jacobson while he did not play Bejarano at all.

It is unclear if Natyazhko will be able to return in time for the Wildcats'regular-season opener on Nov. 14 against Idaho State since he will have to take a post-concussion test next week first. Parrom also suffered a concussion during the first weekend of practice, and missed a week.

Williams, meanwhile, played with a noticeable bruise over his right eye.