Chela, Vogt forced to withdraw from Games with injuries

LONDON -- Juan Ignacio Chela of Argentina and Stephanie Vogt of Liechtenstein withdrew from the Olympic tennis tournament on Monday because of injuries.

The 28-year-old Argentine -- who missed Wimbledon because of a shoulder problem -- was replaced by countryman Agustin Calleri, the International Tennis Federation said.

Vogt was replaced by Thailand's Tamarine Tanasugarn.