Suns star Shawn Marion pulled out of contention for a spot on the 15-man roster that will be Japan-bound because of a left knee injury, ESPN's Andy Katz is reporting.

Players who don't make the trip aren't being cut from the overall national team program, which is a three-year commitment.

"The process [of picking the team] was great,'' Marion said. "Everybody feels a part of the family for all three years. If I'm not there, I'll still feel like I'm there cheering them on.''

"My knee has been bothering me a bit. I sat out the last two days of practice. I just came in here and got right into it. So, I'm going to check it out [Tuesday]. I'll make sure there's nothing wrong with it, rest it and take care of it.''

The 15 players who likely will return to Las Vegas on July 31 for exhibition games will be announced Tuesday morning at the Wynn Hotel.

Marion's departure trims the roster down to 17, leaving two more possible cuts -- likely Seattle point guard Luke Ridnour and former Gonzaga forward and Charlotte Bobcats first-round draft pick Adam Morrison.

That means the 15 players likely to travel to Asia are: Carmelo Anthony, Gilbert Arenas, Shane Battier, Chris Bosh, Bruce Bowen, Elton Brand, Dwight Howard, LeBron James, Antawn Jamison, Joe Johnson, Brad Miller, Chris Paul, Amare Stoudemire, Dwyane Wade and Kirk Hinrich.

The coaching staff will meet Tuesday morning before the news conference to make the final call.

Ridnour looks to lose out to Chicago's Hinrich, and Morrison is up against veteran options.