Novak Djokovic, Ons Jabeur progress in Rome but back injury stops Emma Raducanu

Novak Djokovic's love affair with Rome continued as the five-time champion picked up his 60th victory at the Italian Open with a 6-3, 6-2 success over Aslan Karatsev on Tuesday. Ons Jabeur eased into the second round with a straight sets win over Sorana Cirstea but US Open champion Emma Raducanu was forced to retire from her first round against Bianca Andreescu, still struggling with a back injury she picked up in Madrid last week. World number one Djokovic has never lost before the quarter-finals at the tournament and is now just three victories shy of joining the 1,000 match-wins club. "He probably has the biggest calf we have in tennis. Very strong guy, just solid from the baseline," Djokovic said of the 35th-ranked Karatsev. "You never know with him. If he's feeling the ball, he can be very dangerous because he stays so close to the line, puts pressure on his opponents."

Karatsev committed 36 unforced errors during the match and Djokovic capitalised. "I'll take this win for sure. It's a straight-sets win against a quality opponent," continued the Serb. Djokovic, who is in his record-extending 369th week at the top of the rankings, must reach at least the semi-finals in Rome to hold onto the number one spot, and avoid being overtaken by Daniil Medvedev. In the last 16, Djokovic will face compatriot Laslo Djere or three-time major champion Stan Wawrinka. Grigor Dimitrov and Stefanos Tsitsipas will square off for the second time in seven days after the Bulgarian moved past American qualifier Brandon Nakashima 6-3, 6-4 in first round action on Tuesday. Argentina's Diego Schwartzman saved two match points before seeing off Miomir Kecmanovic 6-2, 3-6, 7-6 (7/3) result while British ninth seed Cameron Norrie saved 4 break