World number 10 Marin Cilic has denied claims suggesting 20-time Grand Slam winner Roger Federer receives favouritism on tour, Tennis World USA report.

Federer failed to defend his Australian Open crown last month after a shock last 16 defeat to Greek youngster Stefanos Tsitsipas.

Current world number one Novak Djokovic went on to secure the first Grand Slam of 2019, claiming his 15th major title after a dominant display in the final against Rafael Nadal.

Former French professional Julien Benneteau claimed back in November that tournament officials schedule matches for the Swiss star to compete at night in cooler conditions.

And when Cilic faced Federer in the 2018 Australian Open final, the roof was reportedly shut because the 37-year-old had trained indoors in the warm-up ahead of the final.

Clive Brunskill/Getty Images Sport

However, despite these two claims, Croat Cilic revealed he does not believe Federer receives favouritism at the big events.

When asked about the controversial decision at the 2018 Australian Open final, Cilic said:

I do not think Roger gets favouritism, I do not think they closed the roof for him but because they thought it was the right thing to do, or because this is how the rulebook says.

It was definitely not right towards me, because I had never played under the roof during the tournament and I also never played a night match.

The communication was not good either, the supervisor came while I was warming up prior to the final to tell me that they may have closed the roof, but they had known already for a couple of days that this situation could have happened.