In 2007, Greg Oden was selected as the No. 1 pick in the NBA draft. He was taken ahead of players such as Kevin Durant, Al Horford and Joakim Noah.
Since then, however, Oden has played in just 82 games, the equivalent of one NBA season. And in those games he's averaged 9.4 points and 7.3 rebounds.
But Oden's problem isn't a lack of ability, it's a lack of health.
On Monday, Oden had his fifth surgery in as many years. Here's a rundown of Oden's surgeries/injuries.
An arthroscopic surgery to clean out debris in his left knee turns into microfracture surgery after the surgeon discovered more damage than expected, according to ESPN.
He has arthroscopic surgery on his right knee.
Oden has microfracture surgery on his left knee, ending his 2010-11 season.
Without anyone touching him, Oden lands on his leg, badly fracturing his left patella. At the time, he's projected to be out until the 2010 training camp.
He bumps knees with Corey Maggette and chips his left patella, causing him to miss three weeks.
Andrew Bynum lands on Oden's foot. He misses two weeks.
Oden has microfracture surgery on his right knee, forcing him to miss his entire rookie season with Portland.