Simona Halep holds a 20-2 record this season and is unbeaten since January -- her only losses came to Aryna Sabalenka in Adelaide and Muguruza in the Australian Open semi-finals.
Simona Halep will be entering the French Open with a 20-2 record this season.
Simona Halep won her first Italian Open on Monday after defeating defending champion Karolina Pliskova, who retired injured in the final.
Top seed Simona Halep ousted Spaniard Garbine Muguruza in three sets to advance to her third final at the Italian Open.
Simona Halep and defending women's champion Karolina Pliskova both eased into the quarter-finals of the Italian Open on Friday.
Rafael Nadal will be looking for his 13th Rolland Garros title at the 2020 French Open.
World number one Novak Djokovic, a four-time Rome winner and five-time runner-up, lost to Rafael Nadal last year in the final.
World number one and defending French Open champion, Ashleigh Barty said it was a "difficult" decision but the health of her family and team came first.
Australian Ashleigh Barty retains the top spot although neither she nor world number two Simona Halep are taking part in the US Open.
Serena Willams will be looking to win her 24th Grand Slam title at the US Open this year.
Simona Halep, the reigning Wimbledon champion, will skip US Open 2020 over coronavirus fears.
Top seed Simona Halep won the Prague Open, the second post-lockdown WTA event, after beating Belgium's Elise Mertens in straight sets on Sunday.
Simona Halep beat Polona Hercog 6-1, 1-6, 7-6 (7/3) in her opening match of the WTA Prague Open.
Simona Halep feels that travelling from Europe for the US Open will be tough as there are no direct flights.
Simona Halep urged people to contribute to the efforts to combat the coronavirus pandemic.
Garbine Muguruza defeated Anastasia Pavlyuchenkova 7-5, 6-3 in a hot and sunny Melbourne to reach the Australian Open semi-finals for the first time.
Simona Halep powered into the Australian Open semi-finals in 53 minutes with a 6-1, 6-1 destruction of Estonia's Anett Kontaveit.
Dumped out of the Brisbane International last week, Ashleigh Barty retains a comfortable cushion of 1,607 points over Karolina Pliskova, who went on to win the Brisbane title.