Andy Roddick wades into Nick Kyrgios and Jannik Sinner drug test feud

Former tennis world No.1 Andy Roddick has taken aim at after the Aussie firebrand blasted tennis officials for not banning Italian star after two positive drug tests.

Kyrgios publicly slammed a tribunal's decision to clear Jannik Sinner of violations after the world no.1 tested positive for banned substances twice.

The International Tennis Integrity Authority reported that Sinner's positive tests occurred in March.

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