Simona Halep is set to go into Wimbledon without any competitive action under her belt on grass after pulling out of Eastbourne.
Andy Murray is not ruling anything out when asked if he will play in his home grand slam at Wimbledon.
The Tennis Anti-Corruption Program has seen Nicolas Kicker, of Argentina, banned for three years and fined for match-fixing offences.
There were contrasting results for two of the big names at the Gerry Weber Open, as Roger Federer progressed with ease.
Two previous Wimbledon champions prepared for this year's tournament with first-round wins at the Birmingham Classic on Tuesday.
Queen's Club welcomed back home favourite Andy Murray, but he could not join Grigor Dimitrov and Novak Djokovic in the second round.
Former world number one Andy Murray was handed a lengthy test on his return, losing to Nick Kyrgios but showing flashes of his quality.
World number one Roger Federer made a winning start to his Gerry Weber Open title defence, beating Aljaz Bedene in straight sets.
Karolina Pliskova lost to Magdalena Rybarikova at Wimbledon last year and fell to the unseeded Slovakian again in Birmingham.
Stan Wawrinka and Marin Cilic hit the ground running in their first grass-court matches of the season at Queen's Club.
If he beats Nick Kyrgios in the Stuttgart Open, Roger Federer will return to world number one. But he is not feeling the pressure.
Alison Riske was unable to take seven chances to beat Coco Vandeweghe, who advanced to the semi-finals in the Netherlands.
Victory over Guido Pella at the Stuttgart Open left Roger Federer one win away from returning to world number one.
Maria Sharapova will delay her start to the grass-court season and Madison Keys is being troubled by an abdominal injury.
After almost a year out injured, Andy Murray will make his return to competitive tennis at the Fever-Tree Championships.
An exciting Stuttgart Open semi-final with Roger Federer remains on the cards for Nick Kyrgios after a winning singles return.
The top seed, the defending champion and the British number one all progressed to the quarter-finals at the Nottingham Open on Thursday.
It did not take Roger Federer long to get back to winning ways, as he clinched the Stuttgart Open on his return to action.