Jamie Murray will have to wait to become the world number one in doubles after he and partner Bruno Soares lost in the quarter-finals of the BNP Paribas Open in Indian Wells.
The duo, who won the Australian Open men's doubles title in January, were beaten 6-7 (2-7) 7-6 (7-2) 10-8 by Feliciano Lopez and Marc Lopez.
Scot Murray, 30, is looking to overtake Soares' fellow Brazilian Marcelo Melo.
"It didn't happen today, but next week we'll go again," said Murray.
"I was aware of it. People write about it so you hear about it.