Bernard Tomic is not a fan of the new Australian Open tennis balls, saying they are “cheap”.

As part of a five-year deal Dunlop took over the ball partnership with the Open this year, also providing balls for the lead-up events including the Kooyong Classic exhibition tournament where Tomic played on Tuesday.

Previously Wilson supplied the balls.

After playing his first match using Dunlop, which was a win over American Jack Sock, Tomic said he was unhappy with the balls.

“I don’t know what the Australian Open has done, but it is terrible,” Tomic said of the balls.

“I don’t know too much (about the balls), but I don’t feel like it is that good of a ball. I think they’re pretty cheap from what I’ve heard.”