LAS VEGAS (AFP) — Victor Wembanyama, the National Basketball Association's top draft pick, showed improvement Sunday in his second game with San Antonio, scoring 27 points in an 85-80 NBA Summer League loss to Portland.

The 19-year-old French center, who stands 7-foot-4, has been hyped as the NBA's best prospect since LeBron James 20 years ago, but received a wake-up call in his first game against NBA talent.

This time, though, Wembanyama grabbed a game-high 12 rebounds, blocked three shots and made a steal in just under 27 minutes on the court.

"It's just me getting comfortable with myself and my body," he said.

"Before today, I had two practices and one game. I was just getting going."

"It's normal to get better every game. I had so much stuff going on with the draft and the game, so it makes sense."

Wembanyama sank 9-of-14 shots from the floor, 2-of-4 from three-point range, and 7-of-12 from the free throw line.

"He was a tough matchup for us," said Portland guard Michael Devoe, who scored a game-high 29 points.

"We just wanted to be physical with him and try to make him make tough shots over us. He did a great job but I think defensively we did a great job too."

In his debut on Friday, Wembanyama struggled with nine points, eight rebounds, five blocked shots and three assists in just over 27 minutes as the Spurs beat Charlotte, 76-68.

He made only 2-of-13 shots from the floor and just 1-of-6 from three-point range.

"In the past month I don't think basketball was 50 percent of my schedule," Wembanyama said.

"I can't stand it. I know it's a special moment in my life but I'm glad it's over."

"I just want to hoop, work out, lift, because this is my life. It just makes me better for the future."

Against the Trail Blazers, Wembanyama looked more comfortable with the Spurs offensive schemes, something he said was a problem in his first game and was able to make dunks and grab attacking rebounds.

"I wish we would have won the game," he said.

"I think I could have done more to help my teammates win this game. We've got to keep learning."