Playing in front of an almost capacity crowd in the Porsche Arena, Ella Seidel served up the day’s emotional highlight when winning a dramatic three-setter against fellow German Tatjana Maria. The two-time Stuttgart winner Iga Swiatek was in impressive form when advancing to the quarterfinals.Playing in front of an almost capacity crowd in the Porsche Arena, Ella Seidel served up the day’s emotional highlight when winning a dramatic three-setter against fellow German Tatjana Maria. The two-time Stuttgart winner Iga Swiatek was in impressive form when advancing to the quarterfinals.