Former world number one Novak Djokovic showed signs of rediscovering his form with a dominant 6-0 6-1 victory over Dusan Lajovic in the opening round of the Monte Carlo Masters on Monday.
It was an impressive performance from the 30-year-old in his first match since splitting from coach Andre Agassi and starting to work again with long-time former coach Marian Vajda.
Ranked 13th in the world after lengthy spells off the court with an elbow injury, Djokovic is training with Vajda for the first time since last year's Monte Carlo Masters.
"I train on this court, so I feel at home," said Djokovic, who lives in Monaco. "I've had a very difficult time in the last 12 months with the injury and everything else that's happened.
"I'm very happy as he (Vajda) is more than a coach. He's more like a brother, a father.
"The reality is I've played six or seven matches since July. I'm lacking matches and a bit of confidence on court. But I'm looking ahead."
Djokovic's start of the season was disrupted by an elbow surgery, and has since suffered defeats in consecutive opening matches at Indian Wells and Miami.
But there were no signs of his recent struggles as he kickstarted his claycourt campaign in style to record a victory over fellow Serb Lajovic in just 57 minutes.
Djokovic, a two-time winner at Monte Carlo, dropped just eight points as he wrapped up the first set with his opponent well off the pace.
Lajovic, ranked 93 in the world, offered resistance in the second set to level at 1-1 but failed to capitalise on a break point as the 12-time grand slam winner roared back to book a second round meeting with Borna Coric of Croatia.
Earlier in the day, Japan's Kei Nishikori came back from a set down to see off Czech 12th seed Tomas Berdych 4-6 6-2 6-1 and reach the second round.
Nishikori, who missed a large part of last season with a wrist injury, started the season in the Challenger Tour events before reaching the second round at Miami.
He was playing close to his best tennis despite calling for a medical timeout for his troublesome wrist.
"It's not great but first match on clay, you know, I'm expecting little soreness," Nishikori said. "Hopefully I have a day off tomorrow. If I have to play tomorrow, I got to be ready tonight."
The 28-year-old, who is making his first Monte Carlo appearance since 2012, will face Russian Daniil Medvedev in the next round.
World number 51 Jared Donaldson confronted an umpire after disagreeing with a call made in his first-round defeat by last-year's finalist Albert Ramos-Vinolas.
While 6-3 3-2 down, the 21-year-old American became outraged when a serve by the Spaniard was called in by Arnaud Gabas when he believed it was out.
Donaldson eventually lost 6-3 6-3 and apologised to Ramos-Vinolas but refused to shake Gabas' hand.
(With Agencies input)
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 "Novak Djokovic")
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