In the match against Tsitsipas, Djokovic won the first two sets comprehensively, but the fifth-seed Tsitsipas staged a comeback and won the third and fourth set, sending the match into the fifth and final set.
Kenin is into her second Grand Slam final of 2020 after thrashing Petra Kvitova, 6-4, 7-5.
Whereas, Swiatek has booked her first Grand Slam final place after defeating Nadia Podoroska, 6-2, 6-1 in the semifinals.
With the rate of new infections, hospitalisations and deaths accelerating months after the lifting of a nationwide lockdown, new rules on social distancing will enter into force starting Tuesday.
On Sunday, 12-time champion Nadal produced another ruthless and dominant display as he dropped four games to complete a 6-1, 6-1, 6-2 win over American qualifier Sebastian Korda on Court Philippe-Chatrier.
Sebastian Korda, the 20-year-old American qualifier who lost to Rafael Nadal by the above scoreline in the French Open's fourth round Sunday, still was beaming afterward.
Nadal, who is seeking a 20th Grand Slam title to equal Roger Federer's record, on Friday defeated Travaglia 6-1, 6-4, 6-0 in one hour and 35 minutes on a covered Court Philippe-Chatrier to register his 96th victory at Roland Garros.