Challenger Tour Weekly Preview: Action From Europe and the USA Challenger Tour While the El Gouna International Squash Open takes place on the PSA World Tour, there is still plenty of action going on on the PSA Challenger Tour, with four tournaments going on this week. Three of those events will take place on European soil with action coming from the Czech Republic, England and Germany, along with a Challenger 10 event, the highest-rated of the four, taking place in the United States. Two of the European events are all domestic-only due to the ongoing COVID-19 pandemic, with only players currently residing in the Czech Republic, and the United Kingdom in the English event’s case, being allowed to enter.