Are you referring to the Ferrero Nalbandian match? Well, it is definitely a primetime type of match that they certainly should put at night when they have more spectators, and since Hewitt is playing, they will give preference for Hewitt to play on RLA at night.
They're probably waiting for the Vodafone matches to get more close to finishing before scheduling any additional matches there.
Damn Grosjean for sucking even more than Blake in that 4th set tiebreak. Usually I don't mind long matches but this round should really get finished today for all players. And the quality of play has been abysmal there.