Andy Murray was today defeated in straight sets by Janko Tipsarevic in this week's exhibition tournament in Abu Dhabi.
Murray, the world number three, looked off his game as he fell to a 6-3 6-4 loss against Tipsarevic on the opening day of the Mubadala World Tennis Championship.
The Serbian progressed to the semi-finals with the victory, where he will face Spain's world number 11 Nicolas Almagro, who came in as a late replacement following the withdrawal of Rafael Nadal due to a stomach virus.
The match started off fairly evenly and continued on serve until Murray was broken in the fourth game by Tipsarevic, who went on to take the first set.
Murray opened the second with an ace, but Tipsarevic, who is ranked ninth in the current ATP standings, hit back to pile on the pressure by claiming an immediate break of serve.
The set progressed with the reigning US Open champion trailing the 28-year-old at 5-3 after some loose play.
Serving to stay in the match, the Scot handed the advantage to his opponent with a double-fault, before a cross-court winner and shot down the line helped him on the way to making it 5-4 in the second set.
Tipsarevic was therefore given the chance to serve for victory and earned himself two match points as Murray was unable to clear a smash to the baseline.
The Serbian duly served out the game and booked his place in the semi-finals and a match against Almagro.
After the match, Tipsarevic told ESPN: "I am happy with my game. I know it's an exhibition match but it's not every day you get to play a grand slam champion and an Olympic gold medal winner.
"I'm just happy I managed to play good tennis tonight.
"Everyone is pumped up and it's the beginning of the season, so If I can get a few more victories heading to the Australian Open that would be brilliant."
Murray said: "I'm looking forward to training very hard and playing some of my best tennis next year.
"It's nice to play in events like this and it's a great atmosphere to play in."
In today's other match, David Ferrer beat Tomas Berdych 6-2, 6-4 to progress to a semi-final meeting with world No 1 Novak Djokovic tomorrow.