Cruz Hewitt has marked his main-draw debut on the second-tier ATP Challenger circuit with a dominant first win over a top-200 opponent.

Received a wildcard into the Brisbane event, the 16-year-old son of tennis great Lleyton wasted no time justifying the faith inside Pat Rafter Arena on Tuesday.

Hewitt made light work of fellow Aussie — and world No.192 — James McCabe for a 6-2 6-1 victory in just 80 minutes.

Hewitt faced just one break point in a strong performance on both ends of the court, making McCabe pay for his wayward service.

The son of a gun has had mixed results in recent months but reached a semi-final in a third-tier ITF event in Brisbane late last month.

McCabe, the fifth seed, arrived in Queensland on the back of reaching an ATP Challenger semi-final in Taipei last we

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