ROBERTO Bautista Agut of Spain reacts after defeating Novak Djokovic of Serbia in their ATP Qatar Open tennis semifinal match in Doha. AFP

DOHA, Qatar — Novak Djokovic of Serbia surprisingly lost in Doha on Friday after being beaten in the Qatar Open semifinals by world no. 24 Roberto Bautista Agut of Spain, 6-3, 6-7 (8/6), 6-4.

The Serb fell to his first defeat of the season in a high-quality contest lasting more than two-and-a-half hours, which saw the Spaniard lose his first set of the week but come back to beat the world number one.

“What happened? I lost the match. That’s it,” a clearly frustrated Djokovic said in his post-match press conference.

Agut took Djokovic’s serve in the second game of the final set for the decisive break and secured victory on his first match point.

“I will remember this match for the rest of my life,” said the 30-year-old Spaniard.

He will play the Czech Republic’s Tomas Berdych in Saturday’s finals.

It is the second time he has beaten Djokovic in his career and both victories occurred in the semifinals.

The first came in October 2016 in Shanghai with Djokovic also competing as world number one at that stage.

Bautista Agut said the recent victory was the better of the two.

“I think today the match was better, the level of the tennis today was very high,” he said.

“We both played very good tennis and it was also more tight on the score and more emotions and today was a really good match.”

A fired-up Djokovic smashed his racket after dropping his serve in the eighth game of the second set.

“I thought I was pretty much in control of the match, set and a break, serving 4-3,” Djokovic said.

“He played a good game. I missed some easy balls and that’s what you get as a result of losing the focus in the most important moments and it happens, it happens.”

Questions may be asked about how tired the Serb was, as he played two matches each day for three days in singles and doubles, prior to the defeat.

Including the meeting with Bautista Agut, Djokovic spent almost 10 hours on court in three days and played 11 sets in singles’ matches.

Asked if he had done too much through the week, he replied: “I wasn’t the freshest, you know.”

“This is what I was looking forward to, to get from this tournament, as many matches as possible, to get ready for the Australian Open, so I’m very pleased.”

“Obviously, I’m not pleased that I lost the match today, but I lost to a better player in the end.”

The second semifinals proved a much tamer affair.

Berdych eased through to his second Doha finals in straight sets, beating Italy’s Marco Cecchinato, 7-6 (8/6), 6-3.

Currently the world no. 73, Berdych was once ranked number four.

His previous Qatar Open final, in 2015, was also against a Spaniard, David Ferrer. It ended in a straight sets defeat.