HOCKENHEIM, Germany -- Sebastian Vettel has called on Formula One to reconsider introducing Halo for 2017 once more on-track tests have taken place following the summer break.On Thursday the Strategy Group ruled that the head protection device would not be introduced until 2018 at the earliest, citing a lack of on-track testing as the reason for the delay. Prior to the decision the FIA produced a presentation for drivers and teams underlining the readiness of the Halo, but now it has called for further on-track tests to take place at the remaining races ahead of the introduction of the device in 2018.I dont think we should doubt the [FIAs] research, Vettel said. I think the way it was explained to us, the main point is that not all of us had a chance to test the system and so I think thats fair to give that chance to everyone. I think theres a plan probably in Spa, Monza, to be given the chance to all of us and make us run with the system for this one session to see how it feels.Although changes to the technical regulations for the following season are not usually made so late in the year, Vettel sees no reason why Halo cannot be introduced if the tests in practice sessions prove positive.The way I understood it is that its still open for 2017 as well, I mean if everything goes right, why not? In the end we are trying to change something for the better. I think at this point its fair to say OK let everyone have a go and go from there.Giants Jerseys 2019 .com) - Yankee Stadium is the home of the Bronx Bombers, but on Sunday afternoon it will open its gates to host the latest addition of the Hudson River Rivalry. Fake Giants Jerseys . Louis Cardinals. 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Custom San Francisco Giants Jerseys . -- Whether Jeremy Hill deserves a prominent role in LSUs offence this early in the season is a matter for debate.TOKYO -- Former champions Kei Nishikori and Tomas Berdych lost at the Japan Open on Wednesday.Top-seeded Nishikori was forced to retire with a left glute problem in the first set of his second-round match against Joao Sousa.Third-seeded Berdych fell to Gilles Muller of Luxembourh 7-6 (7), 6-1 in the first round.Nishikori was 3-0 up when he received medical treatment on his left glute while lying face down on the court for several minutes.The 2012 and 2014 champ served two weak double faults in the next game, and appeared in pain when chasing the ball. He held serve, but lost the next three games before calling a halt while leading 4-3 in his first matchup with Sousa.Nishikori, ranked No. 5, saw a doctor after the match, and will have a scan on Thursday.Sousa moved on to face fifth-seeded David Goffin, after the Belgian beat Jiri Vesely 6-3, 7-5.Also, fourth-seeded Marin Cilic rallied to defeat Spanish baseliner Fernando Verdasco 4-6, 7-5, 7-5.Berdych captured his first ATP title of the season when he retained his Shenzhen Open crown in China on Sunday, but his first-round defeat in Tokyo dented his bid for the ATP Finals. He lies ninth in the race for the elite eight-man finals, which hes played for the last six years.A weary Berdych, the 2008 champ, squandered three break points in the sixth game then failed to convert a set-point in the first tiebreaker.After falling 3-0 behind in the second set, the Czech called for a trainer to treat a left glute complaint, and was unable to stop Muller, who fiired 12 aces.ddddddddddddAt the beginning of the second set, my body gave me a bit of a sign Ive been playing a little too much tennis in the last couple of weeks, Berdych said.Muller, a two-time finalist this year, next faces Marcos Baghdatis.Berdych and Muller believed Maria Sharapova was lucky to have her two-year doping ban reduced to 15 months.Anyone who gives a positive test should get punished. Should they get a reduction? I dont think so, in general, Muller said. It shows other sportsmen that, at the end of the day, the punishment is not going to be that big.Berdych said players knew they had to be very careful about any medications.Every single time I have to take something, I check many times with many different people, he said.At the end, you are the player, you are the athlete, and you are the one whos going to be tested. I always check whatever I take because Im the one who will go for the (doping) control.Sharapova received a little more sympathy from Cilic, who has been through the same process as Sharapova. In 2013, he had a nine-month doping ban reduced to four months.I was not treated fairly at all, Cilic said. In my case the system wasnt wrong, the people were wrong. Thats behind me. It went to the CAS -- its quite fair whatever they say in most of their decisions. But its tough to comment on these things because every case is different and individual. ' ' '