World No. 4 Stan Wawrinka received a sweet surprise from tournament organisers at the Banque Eric Sturdza Geneva Open: a replica US Open trophy handmade entirely of chocolate!

The full-size trophy, carefully crafted from several kilos of chocolate, took two full days to build and was presented to the 2016 US Open champion at a pre-tournament press conference Wednesday in Geneva. The World No. 4 also won his first title on home soil this past May in Geneva and will return to the ATP World Tour 250 tournament in 2017 to defend his crown.

“This is a lovely idea from the tournament,” said Wawrinka. “The trophy looks great, what a nice surprise! It’s good that I already started working on my fitness with Pierre Paganini.”

The 31-year-old Swiss, who defeated Novak Djokovic at the US Open to claim his third Grand Slam title, asked how long he could keep the chocolate trophy and was told it would be edible for about a week. The tournament wrapped and delivered the trophy to Wawrinka following the presentation to ensure it would arrive intact.

Tickets for the Banque Eric Sturdza Geneva Open will be on sale from 8 December. 

Continuing our Season In Review series, ATPWorldTour.com revisits the fiercest rivalries of 2016. Today we feature Juan Martin del Potro vs. Andy Murray & Stan Wawrinka:

Juan Martin del Potro was a man on a mission in 2016. The Comeback Player of the Year in the 2016 ATP World Tour Awards Presented by Moët & Chandon, del Potro turned in multiple watershed moments of magic in his return to action from wrist surgery. Indelible images of the emotional Argentine with tears of joy came early and often.

After reaching the semi-finals in his debut in Delray Beach, he would streak to the third round at Wimbledon with an upset of Stan Wawrinka, claim the silver medal at the Rio Olympics behind stunning wins over Novak Djokovic and Rafael Nadal, reach the quarter-finals at the US Open with a victory over Dominic Thiem, notch his first ATP World Tour title in nearly three years at the If Stockholm Open and cap it off with a thrilling win over Marin Cilic to guide Argentina to its first Davis Cup crown.

The common theme? Inspired performances against the Top 10.

In his first full season back, del Potro was one of just six players to earn at least six Top 10 wins in 2016, joining Andy Murray, Milos Raonic, Nick Kyrgios, Djokovic and Cilic.

The spark immediately returned for the Argentine, rekindling old rivalries with a pair of pulsating match-ups against both Murray and Wawrinka. Murray led the FedEx ATP Head2Head 5-2 entering the season, but they hadn’t faced off for more than three years. Two of the more consistent performers throughout the season, the Scot and the Argentine battled for the gold medal at the Rio Olympics, followed by a five-set, five-hour affair in the Davis Cup semis.

With both players relying on their final reserves, Murray persevered past a dogged del Potro 7-5, 4-6, 6-2, 7-5 in more than four hours to become the first man to win back-to-back singles gold medals at the Olympics. Coming into the match, del Potro had spent 11 hours and 36 minutes on court; Murray, eight hours, 10 minutes. It was a pure war of attrition. Murray saw his win streak extend to 18 straight, while del Potro capped a remarkable week that featured wins over Djokovic and Nadal en route to the silver medal.

“I know tonight’s one of the hardest matches that I’ve had to play for a big, big title,” Murray said. “Emotionally it was tough… Physically, it was hard. There were so many ups and downs in the match. It was one of the toughest matches that I’ve played to win a big event.”

Murray’s defence looked to neutralise del Potro’s firepower once again, as he took a two-sets-to-one lead in the Davis Cup semi-finals a month later. But this time the Argentine powered across the finish line with a furious finish. He prevailed 6-4, 5-7, 6-7(5), 6-3, 6-4 in five hours and seven minutes to open the tie against Great Britain. On his third break chance of the fifth set, del Potro chased down an apparent winning volley from Murray to strike a running forehand winner and secure the decisive advantage.

“It’s amazing. Amazing. I really enjoyed the match,” del Potro said. “He is a ridiculous player, a fighter, a great champion. I was trying to find a way. I played good forehands and good serves. That was the key.”

View FedEx ATP Head2Head (Murray Leads 6-3) 

Del Potro vs. Murray: 2016 Meetings

Arguably the greatest Grand Slam rivalry of the year was between del Potro and Wawrinka, with the Argentine’s forehand firepower clashing with the Swiss’ backhand prowess. Del Potro led the FedEx ATP Head2Head 3-2 entering the season and their first meeting in four years took place in the second round at Wimbledon. With the roof closed on Centre Court, the featured match of the first week did not disappoint.

In just his second match at a major since the 2014 Australian Open, del Potro stormed back from a set down, advancing with a 3-6, 6-3, 7-6(3), 6-3 victory over the fourth seed.

“As we all say, it’s great for tennis to see him back. He’s a great guy, a really good player, a big champion,” Wawrinka said. “He’s beaten some good guys. Today he was playing really well. I think he was serving really well and his forehand is there.”

Wawrinka would avenge the defeat at the US Open, needing four sets to advance through their quarter-final encounter, en route to lifting the trophy. He prevailed 7-6(5), 4-6, 6-3, 6-2 over the 2009 champion under the lights on Arthur Ashe Stadium. The match ended at 1:20 a.m. local time, with the Swiss firing 53 winners, including 10 aces.

“It was important to stay there, to stay tough,” said Wawrinka. “I knew before the match that against del Potro it’s a tough challenge. He’s playing well. He’s strong mentally. He doesn’t give you much. It’s going to be painful physically and mentally to stay there, so I had to adapt my game a little bit. It’s not a player that I can really always play the way I want to against, because he’s so aggressive”

View FedEx ATP Head2Head (del Potro Leads 4-3)

Del Potro vs. Wawrinka: 2016 Meetings

Milos Raonic will try to improve upon his career-best 2016 without the guidance of coach Carlos Moya. The Canadian announced on Wednesday that the two will no longer be working together.

Raonic first partnered with the former World No. 1 in January, and he went on to experience his best season on the ATP World Tour. The 25 year old kicked off the year by winning his eighth ATP World Tour title in Brisbane (d. Federer). Raonic proceeded to reach the Australian Open semi-finals, the BNP Paribas Open final, The Queen’s Club final and his first Grand Slam final at Wimbledon (l. to Murray).

Raonic also earned a career-high 52 wins in 2016 and finished at a career-best year-end No. 3 in the Emirates ATP Rankings, up 11 spots from his 2015 year-end ranking of No. 14.

“Thank you to Carlos Moya for helping me tremendously this year, alongside my team, to get the best out of me. Under Carlos’ direction and tutelage I have played my best yet to date,” Raonic posted on Instagram. “We will no longer be continuing our coaching relationship but remain close friends. I wish him all the best.”

Raonic also works with Riccardo Piatti on a full-time basis. The Canadian had also brought on John McEnroe for a stretch during the grass-court and U.S. hard-court swings. Before working with Moya, Raonic had worked with Croatian Ivan Ljubcic for more than two years.