Roger Federer has performed well since the French Open. Reuters

An unlikely player won the 2015 French Open, but such a result isn’t expected at the upcoming Grand Slam tournament. After Stan Wawrinka beat Novak Djokavic in the finals at Roland Garros, the world’s No.1 player is still the heavy favorite to win at Wimbledon 2015, followed by the rest of tennis’ “Big Four.”

Djokovic has won five titles this year, including the Australian Open. He beat Roger Federer in the Wimbledon finals last year, and he’s reached the finals at the event in three of the last four years. Even if he doesn’t win the event, the Wimbledon finals seems all but certain to include Djokovic, considering the sport’s top player has reached the finals in eight of the last 11 Grand Slams.

After losing to Wawrinka a few weeks ago, Djokovic has stayed away from the tennis court. He hasn’t competed in a tournament since his defeat in the finals, taking the time to relax in between Grand Slams. But his top competitors have been preparing to make sure that Djokovic doesn’t repeat as champion.

Federer has the third-best betting odds at Wimbledon, but he might be the biggest threat to Djokovic. He’s won the tournament seven times, claiming the title last in 2012. On Sunday, he finished up the Gerry Weber Open by winning the title, defeating No.45 Andrea Seppi on grass for the victory. Federer has won all five of his matches on grass in 2015.

No.3 ranked Andy Murray also won a grass tournament on Sunday, winning the AEGON Championships in London. His road to the title was more difficult than Federer’s, topping No.17 Kevin Anderson in the finals, as well as beating No.25 Viktor Troicki in the semifinals. Federer’s toughest task came in the semifinals when he defeated No.27 Ivo Karlovic.

Rafael Nadal won the Mercedes Cup on grass the week after the French Open, but his struggles in 2015 continue. He didn’t make it past his first match at the AEGON Championships, losing to No.79 Alexandr Dolgopolov. Nadal last won at Wimbledon in 2010, while also reaching the finals in 2011 when he lost to Djokovic.

The sport’s “Big Four” has dominated the tournament over the last 12 years, winning each title since 2003. Coming off his big win at the French Open, Wawrinka is considered to have the best chance of winning among the rest of the field. He’s followed by Grigor Dimitrov, who ranks No.11 in the world and reached the semifinals of Wimbledon 2014.

Below are the betting odds for Wimbledon 2015 four days before the start of the tournament, provided by Bovada.lv.

Novak Djokovic 5/4

Andy Murray 11/4

Roger Federer 6/1

Rafael Nadal 10/1

Stan Wawrinka 14/1

Grigor Dimitrov 20/1

Kei Nishikori 25/1

Milos Raonic 25/1

Tomas Berdych 28/1

Juan Martin Del Potro 25/1

Marin Cilic 33/1

Nick Kyrgios 40/1

Jo-Wilfried Tsonga 50/1

Bernard Tomic 100/1

Ernests Gulbis 100/1

Ivo Karlovic 100/1

Jerzy Janowicz 100/1

John Isner 100/1