Greg Oden, trying to make it back after a career-threatening knee injury, endured a slight setback Wednesday as he was held out of practice with swelling in his left knee. Oden missing practice comes two days after he had his first 5-on-5 workout since starting his comeback attempt with the Heat. His highlight Monday was blocking a shot by LeBron James. Oden's return to contact work had spurred some optimism that he could play in a preseason game. Those hopes have been dimmed now as he's had to ease off his workload. The Heat and Oden have been very careful to avoid a timetable for a return. This is part of the reason, they are preparing for setbacks such as these. "This has been three years for me, as long as it's no surgery, it's OK," said Oden, who last played in an NBA game in 2009. "This is going to be a long season, I'm going to get there." Read more http://espn.go.com/nba/truehoop/mia...g-oden-miami-heat-held-practice-swelling-knee