The event was part of the Tier II category from 1990 until 2008 and as of 2009 has been a Premier tournament on the WTA Tour.

[3] The players voted for the Porsche Tennis Grand Prix as their favourite Premier tournament in 2007, 2008, 2010–2012, 2014–2017.

[4] After failing to schedule a men's event in 1978 a license for a Tier II women's tournament was purchased for $100,000 and the first edition was held in October 1978, won by 15-year old Tracy Austin.

In 1992 a request for promotion to the Tier I category was rejected by the WTA on the grounds that the tournament's centre court, with a 3,000-seat capacity, was too small.

[1] In 2002 Fischer sold the tournament licence to Porsche who had been the official sponsor since the first edition.