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.
Dominic Thiem won his first match since the French Open final, getting past Mikhail Youzhny in the first round in Halle.
Novak Djokovic joined an exclusive club on Friday, winning his 800th ATP Tour match in the sport he says, "I love with all my heart".
Dominic Thiem had been on course for a semi-final meeting with Roger Federer in Halle, but he went down to Yuichi Sugita on Wednesday.
Marin Cilic will face Sam Querrey in the last eight at Queen's Club after the latter dumped out three-time major winner Stan Wawrinka.
High-profile names were eliminated from both the Birmingham Classic and the Mallorca Open, with Naomi Osaka bowing out injured.
Garbine Muguruza has not started the grass-court season as she would have liked, but she continues to look forward to her Wimbledon defence.
More big names tumbled out of the week's two WTA Tour events on Friday, as Mihaela Buzarnescu and Sofia Kenin claimed scalps.
Simona Halep is set to go into Wimbledon without any competitive action under her belt on grass after pulling out of Eastbourne.
Roger Federer moved into the last four of the Gerry Weber Open, but it was not all plain sailing against Matthew Ebden.
Andy Murray offered no guarantees he will play at Wimbledon, but the three-time major champion will play at Eastbourne next week.