A busy week on the WTA and ATP Tours will be highlighted by Angelique Kerber's quest to overtake Serena Williams in the rankings and Nick Kyrgios' defense of a title for the first time.
- Unseeded Riske upsets Vandeweghe in Dubai
- Simon beats Khachanov to move on in Open 13
- No. 3 Pablo Cuevas ousted in 1st round at Rio
- Federer says Laver Cup will be a 'tough' contest