Unbeaten WBA and IBO world champion Gennady “GGG” Golovkin says his next challenger for his belts, Birmingham’s Matthew Macklin will be his toughest test to date. Golovkin will be putting that theory to the test against ‘Mack The Knife’ at the MGM Grand at Foxwoods Resort, Mashantucket, Connecticut, USA, on June 29.

“I’m excited to return to the United States and once again fight on HBO. Matthew Macklin is a skilled, strong fighter and I look forward to the challenge of defending my titles on June 29th,” said Golovkin.

“I have seen a few of his fights and am very conscious of how tough of a battle this is.” – GGG on Macklin

“He is the best challenger for me right now, I know this! He is the best opponent for me to date.”