ORLANDO, Fla. -- Derrick Rose's introduction to professional basketball ended not long after it began.
Rose, the No. 1 overall pick in the NBA draft by the Chicago Bulls, sat out a second consecutive summer league game on Thursday because of nagging tendinitis in his right knee. He won't play in Friday's finale.
Rose said he will likely undergo an MRI on the knee when he returns to Chicago this weekend.
"It's just tendinitis and nothing like, super bad with the knee," said Rose, after Chicago's 84-68 loss to New Jersey in the Orlando Pro Summer League. "They say it keeps happening because I'm young and my legs aren't strong enough and they have to work on my legs."
Rose made his professional debut on Monday against the second overall pick, Miami's Michael Beasley, and struggled through a 10-point, 5-turnover game. He played better on Tuesday with 9 points, 7 assists and 3 steals, but he aggravated the existing soreness in the knee with an awkward landing on a jump-stop drive in the lane.
"That triggered it because I put all of that pressure on it," Rose said. "I tried it [on Wednesday] and I was like, 'Man, it's not ready yet.'"
In two games, Rose made just 5 of 17 shots and had 8 turnovers to go with his 11 assists.
Rose won't play Friday against Oklahoma City's Russell Westbrook in one of the marquee matchups of the week. Westbrook, the No. 4 overall pick out of UCLA, has been one of the stars of summer league play.
John Denton is a regular contributor to ESPN.com. He covers the Orlando Magic for Florida Today.