In the second career meeting between the two players, Svitolina was in a strong position from the beginning as she took a 5-0 lead over Williams in the opening set and never returned.
India, who are currently the number one Test side in the world, will look to complete a 3-0 rout of Sri Lanka.
Top-seeded Rafael Nadal lost to 18-year-old Denis Shapovalov 3-6, 6-4, 7-6 (4) in third round.
Davinder Singh Kang's participation in the World Championships was earlier in doubt after he tested positive for marijuana in June.
Sri Lanka replaced injured spinner Rangana Herath and pacer Nuwan Pradeep, while batsman Danushka Gunathilaka has been dropped for the Pallekele Test.
Davinder Singh Kang's best effort of 84.22m put him in the seventh position among the final round qualifiers.
Team India skipper Virat Kohli and bowling spearhead Ravichandran Ashwin have supported opener Abhinav Mukund's emotional Twitter post, recalling the abusive racist posts he received due to his skin colour.
The 58-year-old former India skipper also showered praise on young all- rounder Hardik Pandya for his incredible skills on the cricket field.
Dushmantha Chameera and Lahiru Gamage replace injured spinner Rangana Herath and pacer Nuwan Pradeep in Sri Lanka squad for the third Test against India in Pallekele.
Jaipur Captain Manjeet Chhillar scored 9 points, he played the lead role in Panthers victory as Pune suffered their first defeat of the Pro Kabaddi League 2017.
India's squad for the upcoming five-match ODI series and the lone T20I against Sri Lanka will be picked on Sunday.
Tamil Thalaivas register their first win of Pro Kabaddi League, they beat Bengaluru Bulls 29-24 in Match No. 22 at the Manakpur Indoor Stadium, Nagpur.
I always wanted to bowl fast. The place where I come from is not known for producing fast bowlers, adds India's Premier pacer Umesh Yadav.
Led by Manjeet Chillar, Jaipur Pink Panthers beat Puneri Paltan 30-28 in a tight contest at Mankapur Indoor Stadium, Nagpur.
I was concentrating on my race, so I don't know how he was running but I feel good to have run alongside him, Lakshmanan added.
India conceded the solitary goal in the dying minutes of the fourth quarter and final 15 minutes with Tom Boon (60th minute) finding the net for the hosts.
The 27-year-old Indian clocked 13 minutes 35.69 second, nearly one second better than his earlier personal best of 13:36.62.
It is true that the performance of our country in the field of sports has been below potential, says union minister Kiren Rijiju in the Lok Sabha.
Argentina retained third place, Switzerland rose to fourth - their highest position since the first rankings 24 years go - and Poland moved into an all-time best fifth.
Neymar's world-record 222 million euros transfer from Barcelona to Paris Saint-Germain was completed last week, but the Brazil international has yet to be granted permission to play.
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