Complex sentence: Raffaele Marciello returned for Sauber after he had already filled the role at the Malaysian Grand Prix; and making her debut for 2015 was Susie Wolff for Williams, finishing eight-tenths of a second behind regular driver Felipe Massa.
Split into simpler sentences: Raffaele Marciello returned for Sauber after he had already filled the role at the Malaysian Grand Prix. Making her debut for 2015 was Susie Wolff for Williams, finishing eight-tenths of a second behind regular Felipe Massa.