 He scored his first win of the year in the fourteenth round of the season at Istanbul, and took the lead of the championship, but Glock moved back ahead of him when he won the sprint race at the same track.Heading into the final race of the season at Valencia, di Grassi was two points adrift of Glock and said that he was not worried over outside factors determining the title.In changeable weather conditions, di Grassi started on wet tyres, but the rain let up, and he entered the pit lane after two laps for the slick tyres.