American tennis star Serena Williams was extremely satisfied with her first serve after overcoming former top-20 player, Romania's Mihaela Buzarnescu, 6-3, 5-7, 6-1 in the French Open second round late on Wednesday evening.

Serena, the winner of three French Open titles with the last coming in 2015, won 75 per cent of the points on her first serve and said afterwards, "I felt it was pretty good today. I've been practising my serve a lot. I've been playing in practice unbelievable on my serve. The other night (first-round match against Romania's Irina Begu) was, wow. I'm glad it came better today.