Ugly spat

Bernard Tomic has poured petrol on his heated feud with Nick Kyrgios by labelling his former team-mate ‘‘delusional’’ and challenging him to either a million-dollar winner-takesall tennis match or a boxing fight.

The relationship of two of Australia’s highest profile tennis stars has soured following a flurry of verbal barbs on social media.

This week Kyrgios labelled Tomic Australia’s ‘‘most hated athlete’’ and scoffed at Tomic’s suggestions he would come off second-best on the court.

Tomic said he was willing to put A$1 million (NZ$1.1 million) on the line if Kyrgios had the courage to back up his claims of superiority.