The Los Angeles Clippers should've been celebrating a huge road victory against the Orlando Magic Monday night. Instead the mood in the Clippers' locker room was quiet and subdued as players and coaches worried about the seriousness of an Achilles tendon injury to Chauncey Billups. Billups hobbled off the Amway Center court with 5:48 left in the fourth quarter after landing awkwardly on his left foot. After lying in pain for about a minute, he put light pressure on his foot as teammates helped him off the court. He'll be re-evaluated in Tuesday morning. The Clippers had no further updates Monday night.