Jelena Jankovic has said that she felt "exhausted" ahead of her Miami Masters semi-final defeat to Maria Sharapova.
The Serbian lost 6-2 6-1 to the world number three less than 24 hours after her gruelling three-set encounter with Roberta Vinci.
"Maria played really well today," Jankovic told reporters. "She was playing her tennis from the start, but I think the opponent plays as much as you give her, as you let her play.
"From my part, I didn't do my job. Overall, I wasn't moving. I felt heavy on the court. I felt really tired and exhausted. I didn't really have enough time to recover [from last night].
"The schedule was tough. I played yesterday three hours, so today I wasn't on the top of my game, but all the credit to Maria. She played very well, and she was the better one today."
Sharapova will now play Serena Williams in Saturday's final.