Andrew Bynum did nothing more at Philadelphia 76ers practice than receive some slaps on the back. His teammates tried to cheer up the center with a simple message: Hang in there. Bynum wanted so much more out of the day he expected to practice for the first time with his new team. Bynum remained sidelined with right knee pain and is a long shot to play in the Oct. 31 opener. His debut is on hold and no one knows when Bynum will return. He will continue to be held out of all basketball activity until he is pain free from a bone bruise he suffered during an offseason workout. The Sixers had pegged Wednesday as their franchise player's potential return date after a three-week layoff that cost him the entire preseason slate. Instead, Bynum was on the sidelines while the rest of the Sixers practiced and scrimmaged. Read more: http://espn.go.com/nba/story/_/id/8546706/andrew-bynum-philadelphia-76ers-long-shot-opener