Heather Watson has been drawn against world number 63 Silvia Soler Espinosa in the first round of the Olympics.
Watson, one of three Brits in the ladies' singles draw, will be confident of overcoming her opponent, who is regarded as a clay court specialist.
Anne Keothavong has been handed a tough encounter with former world number one Caroline Wozniacki, while Elena Baltacha will come up against Agnes Szavay of Hungary.
The match of the round with see Wimbledon champion Serena Williams play Serbia's Jelena Jankovic.
