World No 1 Novak Djokovic was trying hard to take his shock defeat at the ATP Indian Wells Masters in his stride, but it was not easy.
Djokovic, who currently holds three of the four grand slam titles, was beaten 6-4, 6-4 to world No 39 German Philipp Kohlschreiber in the third round on Tuesday.
"To be honest, I don't enjoy losing," The Serbian said.
"Especially in a tournament like this, a tournament where I have had plenty of success in the past ... but it happens, just one of those days."
Djokovic, playing his first tournament since lifting his record seventh Australian Open title in January, knew he would have to work his way back into top form.
He admitted to being nervous in the early stages of his second-round 7-6, 6-2 win over US qualifier Bjorn Fratangelo.
Nevertheless, Djokovic thought he was poised for a deeper run, something he will now try to achieve in doubles alongside Italian playing partner Fabio Fognini.
Shortly after falling to Kohlschreiber, Djokovic was headed out for doubles, teaming with Fognini for a 7-6, 2-6, 10-8 victory over Jean-Julien Rojer and Horia Tecau to reach the semi-finals.
"You just have to deal with it, move on, turn the next page," Djokovic said. "Miami is the next tournament singles-wise for me.
"I'm going to try to go all the way here in doubles. I'm really excited about that."
But he'll also be putting in some solid singles practice.
"Things to work on, without a doubt," Djokovic said. "I'm not at my highest level, but slowly building, and hopefully I'll be able to peak in Miami."