Despite winning his 12th French Open, Nadal remains in second while Barty's triumph helped her climb to No.2 behind Osaka.
German player Angelique Kerber is in third place, while Dutch player Kiki Bertens climbed from seventh to a career-high fourth position after beating Halep on Saturday in the Madrid Open.
The green initiatives, the MCC hopes, will put the city back in the race to get the crown in the cleanest city rankings.
Hosadurga town in Chitradurga district was ranked eighth rank in South zone in the under 25,000 to 50,000 population category.
Angelique Kerber of Germany remained in third place, ahead of Japan's Naomi Osaka
Romania's Simona Halep tops the table ahead of second-placed Caroline Wozniacki of Denmark with Germany's Angelique Kerber holding onto third place.
Simona Halep retains top spot in WTA rankings, Petra Kvitova moves to eighth following Madrid Open win
Petra Kvitova jumped two spots to eighth in the latest WTA rankings released after beating Kiki Bertens to win the Madrid Open.
Germany's Alexander Zverev came third with 4,410 points, followed by Dominic Thiem of Austria.
There were no changes in this week's top 10, as Denmark's Wozniacki held the third position, followed by Czech Karolina Pliskova.
The 30-year-old former world number one triumphed 7-5, 7-6 (10/8) against teenager Aryna Sabalenka of Belarus to claim her first title since serving a 15-month doping ban.
Romanian tennis player Simona Halep continued to lead the Women's Tennis Association rankings released.
Karolina Pliskova has become the new world number one, despite tumbling out of Wimbledon in the second round.
German Angelique Kerber remained at the top of the WTA world singles rankings released on Monday.