"It's completely unconnected. That's the positive of today," he said.

Novak Djokovic swept Grand Slam titles two years ago in Paris, while competing in this year's tournament as No. 20 seed, his lowest Grand Slam seeding since the 2006 U.S. Open after an elbow injury forced him to be sidelined from many tournaments last year.

The Serbian saw off Brazil's Rogerio Dutra Silva 6-3, 6-4, 6-4, joining seeded players Dominic Thiem, Diego Schwartzman and Sam Querrey in the second round.

"It has been difficult to face the most challenging injury that I have ever had," recalled Djokovic.

"It's been a long 12 months behind me, but I'm starting to play better. In the past couple of

weeks, I feel like playing pain free, not thinking about the elbow," he added.

Second-seeded Caroline Wozniacki withstood challenge from Danielle Collins of the United States to move past the women's singles first round 7-6 (2), 6-1.

Women's prominent names Petra Kvitova and Karolina Pliskova also marched on, while former world No. 1 Victoria Azarenka fell short at 7-5, 7-5 against Katerina Siniakova.

China's Zhang Shuai, Peng Shuai and Duan Yingying will kick off their campaign at the 2018 French Open on Tuesday.

【体坛英语资讯：Nadal leads 2-0 before rain spoils, Wawrinka crashes out from Roland Garros】相关文章：

★ 体坛英语资讯：China suffers 4-0 loss to Brazil

★ 体坛英语资讯：Lakers head for record 29th NBA Finals

★ 体坛英语资讯：Xing Huina Redemption: Marathoner looks to US coach for second chance

★ 体坛英语资讯：Bielsa comes back to take charge of Chile

★ 体坛英语资讯：Wariner beaten by Australian Batman

★ 娱乐英语资讯： 24 City screened for a city reborn

★ 娱乐英语资讯：Hayden Panettiere stars in Got Milk campaign

★ 体坛英语资讯：Beckham says hes fit for England selection

★ 娱乐英语资讯：Brad Pitt ready to rumble in boxing movie

★ 体坛英语资讯：Sacred flame arouses Olympic passions among Istanbul citizens