Williams will not make a final decision regarding its 2018 Formula 1 line-up until the new year as it continues to mull over who will partner Lance Stroll next season.
Full times and results from Sunday morning's sprint race 2 at the Red Bull Ring in Spielberg, Austria, the fourth weekend of the 2015 GP2 championship.
Full times and results from Saturday afternoon's feature race 1 at the Red Bull Ring in Spielberg, Austria, the fourth weekend of the 2015 GP2 championship.
Full times and results from the Friday GP2 qualifying session at the Red Bull Ring in Spielberg, Austria, the fourth weekend of the 2015 GP2 championship.