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The under-21's boss was dealt the blow of losing two key figures on the even of Thursday's opener against the Czech Republic, with striker Liam Delap and midfielder Jobe Bellingham withdrawing from the squad following recent transfers.

Eisen is a former ambassador to the Czech Republic who served as White House ethics advisor under President Obama.

The tournament takes place in Slovakia this month, with England's first game against the Czech Republic on 12 June.

Daria Kasatkina claimed her first Grand Slam match win as an Australian, after switching allegiance from Russia, with a 6-1 3-6 6-3 win against Katerina Siniakova of the Czech Republic.

Hungary, Germany and the Czech Republic also offer lucrative incentives to filmmakers.