French Open at a glance - Day One:
+ Federer claims comfortable win in first Roland Garros match since 2015
+ Kerber career Grand Slam bid ends in first round by Russian teenager Potapova
+ Tsitsipas cruises into round two
+ Second seed Pliskova makes strong start
+ Svitolina sees off 38-year-old Venus
Anastasia Potapova (RUS) bt Angelique Kerber (GER x5) 6-4, 6-2
Stefanos Tsitsipas (GRE x6) bt Maximilian Marterer (GER) 6-2, 6-2, 7-6 (7/4)
Roger Federer (SUI x3) bt Lorenzo Sonego (ITA) 6-2, 6-4, 6-4
Karolina Pliskova (CZE x2) bt Madison Brengle (USA) 6-2, 6-3
Elina Svitolina (UKR x9) bt Venus Williams (USA) 6-3, 6-3
New court 'like a garden'
Garbine Muguruza won the first-ever French Open match to be played on the picturesque Court Simonne Mathieu, beating Taylor Townsend in three sets. The 2016 champion was impressed by what she saw.
"It's in a very different place. You don't feel like you are around court. It's like in a garden. It's a different feeling," she said.
From hero to zero
Italian Marco Cecchinato made waves last year in Paris with a shock victory over Novak Djokovic helping him reach the semi-finals as the world number 72. Twelve months on, though, and seeded 16th, he blew a two-set lead to lose 2-6, 6-7 (6/8), 6-4, 6-2, 6-4 against French veteran Nicolas Mahut.