Premise: The Internazionali Tennis Val Gardena Südtirol "(also known as the Sparkassen ATP Challenger on the ATP Challenger Tour)" is a tennis tournament held in Ortisei, Italy since 2000. The event is part of the ATP Challenger Tour and the ITF Women's Circuit and is played on indoor hard courts. The event was previously a $100,000+H ITF Women's Circuit category from 2008 to 2009.
Hypothesis: ATP is part of the professional tennis circuit