Coco Gauff will have the chance to down world number one Iga Swiatek after progressing to the Italian Open semi-finals with Tuesday's victory over Qinwen Zheng.

The 20-year-old breezed into the last-four draw in Rome after her straight-sets victory over Zheng, winning 7-6 (7-4) 6-1.

Gauff faced just one break point throughout the match, failing to hold her serve at 5-3 up as seven-seed Zhen battled back in the first set.

Yet Gauff eased through the tie-break and never looked back from there on, teeing up a meeting with Swiatek, who overcame Madison Keys in straight sets in her quarter-final clash.

Data Debrief: Young Gauff powers on

No player has won more matches than Gauff (61) in WTA-1000 events before turning 21, since the introduction of the format in 2009, as the American moved past Caroline Wozniacki (60) with victory here.

Wozniacki (eight) is also the only player to manage more WTA-1000 semi-final appearances before her 21th birthday, with Gauff's last-four qualification here taking her onto six – one ahead of Swiatek.

Naomi Osaka's promising Italian Open run was halted by Zheng Qinwen on Monday, as the seventh seed denied the four-time grand slam champion a quarter-final place.

Following Saturday's triumph over Daria Kasatkina – her second successive straight-sets win over a top-20 opponent in Rome – Osaka laughed off the "Clayomi" moniker given to her by some fans.

On Monday, her old troubles on the surface came back to the fore as Zheng dominated from the off to make the tournament's last eight for a second straight year, winning 6-2 6-4.

Osaka saw her serve broken in the very first game only to hit straight back, but Zheng assumed control by taking seven straight games to go from 2-1 down in the opener to 2-0 up in the second set.

The 21-year-old produced a clinical performance and converted all four of her break points, winning 78 per cent of first-serve points to Osaka's 68 per cent as she teed up a quarter-final clash with either Coco Gauff or Paula Badosa.

Data Debrief: 'Clayomi' no more as Zheng triumphs

Osaka impressed on a surface long regarded as her worst in Italy, but it was a bridge too far for her on Monday, Zheng reaching her fourth WTA 1000 quarter-final.

Since the format's introduction in 2009, she is just the second Asian player to reach multiple quarter-finals on both hardcourts and clay at that level before the age of 23, the other being Osaka.