MADRID, April 25 -- Jannik Sinner took a first step towards a potential record fifth consecutive Masters 1000 title with a 6-7 (6/8), 6-1, 6-4 victory over Benjamin Bonzi in the Madrid Open second round yesterday.

The Italian world number one is looking to beat the record of four consecutive triumphs held by all-time greats Novak Djokovic and Rafael Nadal this week in the Spanish capital.

Sinner dropped only one set on the way to trophies in Paris, Indian Wells, Miami and Monte Carlo, but Bonzi battled brilliantly to claim the first at the Manolo Santana stadium.

The Frenchman survived five break points to reach a tie-break, where he also saved set point before edging ahead.

However, Sinner stepped up a gear in the second set, securin...