The Dubai Duty Free ATP Tennis Championships will once again field a competitive line-up, after kicking off on Sunday. Roger Federer bids for an eighth crown <a href="https://www.thenational.ae/sport/tennis/dubai-tennis-2019-predictions-can-stefanos-tsitsipas-or-kei-nishikori-stop-roger-federer-1.829494">when he gets his campaign under way against Philipp Kohlschreiber.</a> One player looking to deny the 20-time grand slam champion is <a href="https://www.thenational.ae/sport/tennis/dubai-tennis-2019-predictions-can-stefanos-tsitsipas-or-kei-nishikori-stop-roger-federer-1.829494">Stefanos Tsitsipas of Greece, </a>who begins his quest for a first Dubai Tennis Championship crown against Australia's Matthew Ebden. The winner of Saturday's men's final will claim a winner's cheque of US$523,330 (over Dh1.9 million) from the $2,887,895 purse. Belinda Bencic, <a href="https://www.thenational.ae/sport/tennis/dubai-tennis-belinda-bencic-soars-to-win-title-and-book-date-at-skydive-dubai-1.829296">winner of Saturday's WTA final against Petra Kvitova</a>, banked a cheque for $520,615. The ATP 500 tournament takes place at the Aviation Club Tennis Centre in Dubai.