Stanford gave up 19 offensive rebounds, but the Cardinal stayed with No. 13 Missouri in a 78-70 loss in the opening round of the Battle 4 Atlantis at Paradise Island, Bahamas, on Thursday.
"It definitely was a physical game. We learned a lot from it," Powell said. "Those guys competed hard especially offensively and showed us that we have to have five guys rebound and we cannot allow them to bully us underneath like they did today. Something we can definitely improve on."
"I am proud of my guys. I thought we went out and competed well," Stanford coach Johnny Dawkins said.
Chasson Randle had 22 points for the Cardinal (3-2), who have lost two straight.
Missouri finished with a 43-39 rebound advantage including 19-12 on the offensive end.
Stanford, which trailed by 12 points in the first half, stayed within reach in the second half and was down 72-68 with 1:15 left on a long jumper by John Gage.
Dwight Powell had 18 points and 10 rebounds for the Cardinal while Gage added 10 points.
Randle was coming off a 2-for-16 effort from 3-point range in the loss to Belmont and he was 1 of 6 from there against Missouri. The Cardinal were 6 for 26 from beyond the arc while Missouri was 4 of 19.
Also at the Battle 4 Atlantis, Seth Curry scored 25 points and Mason Plumlee added 20 points and a career high-matching 17 rebounds as No. 5 Duke's starters scored all but two of the Blue Devils' points in an 89-71 victory over Minnesota. Duke (4-0) will face VCU in Friday's semifinals.
Morehead State: First-year coach Sean Woods is facing possible disciplinary action after appearing to shove Eagles' point guard Devon Atkinson during Wednesday's 81-70 loss to Kentucky. Athletic department spokesman Matt Segal said Thursday the situation is being discussed internally.