Jannik Sinner showed grit and determination as he battled through physical struggles to take the lead against Daniil Medvedev in a gripping Italian Open semi-final—before rain forced an early halt to the action.

The world number one, playing in front of a passionate home crowd in Rome, was leading 6-2, 5-7, 4-2 when the weather intervened, postponing the match until Saturday. It was a dramatic twist in what had already been a rollercoaster contest at the Foro Italico.

Sinner came out firing on all cylinders, racing to a 4-0 lead in the first set and looking every bit the dominant force that has made him the top-ranked player in the world. But Medvedev, a former US Open champion and no stranger to big moments, refused to buckle. The Russian steadied himself in the second set, surging to a 3-0 lead as Sinner’s energy levels dipped and uncharacteristic errors crept into his game.

Despite visibly struggling—leaning on his racquet for support and taking a medical timeout for treatment on his thigh—Sinner showed the fighting spirit that has defined his rise. He held a tense fourth game to avoid falling further behind, then broke back to keep the set alive. Medvedev, however, kept the pressure on and eventually converted a break point as Sinner served to stay in the set, clinching it 7-5. It was the first set the Italian had dropped all tournament.

With the match hanging in the balance, Sinner dug deep in the deciding set. He earned three break points in the third game and let out a roar of relief when Medvedev sent a backhand long on the second opportunity. That break gave Sinner a 4-2 lead, but just as momentum seemed to swing his way, the rain came down, and organisers decided to call it a day.

In the other semi-final, Casper Ruud made short work of Italy’s Luciano Darderi, winning 6-1, 6-1 to book his spot in the final. The Norwegian, a seasoned Masters 1000 campaigner, used his experience to full effect.

"It's my 10th semi-final in a Masters 1000 and it was his first," Ruud said. "You try to use that experience to your advantage, and I think I did that well today. He was maybe a little stressed by the occasion, but I stayed focused and in my own tunnel vision."

With Sinner and Medvedev set to resume their battle on Saturday, tennis fans are in for a thrilling conclusion to what has already been a memorable Italian Open. For Sinner, who leads their head-to-head 8-7, the chance to extend his record of 33 Masters 1000 wins—and reach the final on home soil—is still very much alive.