A fortnight on from his maiden victory with Aprilia in the Americas GP, Vinales could muster only a ninth-place finish at Jerez, over 11s off race winner Francesco Bagnaia on the factory Ducati.
He and Aprilia team-mate Aleix Espargaro were also the slowest of the Q2 runners in qualifying, ending up more than two seconds slower than the pace set by Gresini Ducati rider Marc Marquez in 11th and 12th positions.
