Brazilian driver Felipe Massa is to retire definitively from Formula One at the end of the season he announced on Saturday. The 36-year-old Williams pilot -- who won 11 Grand Prix to date -- decided to call it a day as his team are yet to confirm their line-up for next season. Massa had indicated he would like to compete again next year -- having originally changed his mind about retiring at the end of 2016 -- but Williams are thought to be favouring giving Poland's Robert Kubica, who has performed miracles to return after a terrible crash in a rally in 2011, the drive alongside Canadian Lance Stroll.

Felipe Massa