Cilic cops another blow in Basel, Zverev eases through

The 93rd-ranked Marius Copil beat a struggling Marin Cilic in straight sets to reach the last eight in Basel.

Marin Cilic will be at the end of this week after suffering a shock second-round defeat to qualify Marius Copil at the Swiss Indoors Basel.

Cilic would have been assured of a place in the season-ending tournament in London, but lost 7-5 7-6 (7-2) on Wednesday.

A copgling Cilic had an abysmal first-serve percentage of only 39 and failed to secure a solitary break 93 Copil pulled off a big upset.

Cilic made early exits at the Shanghai Masters and Japan Open Tennis Championships after losing in the quarter-finals of the US Open and Copil capitalised on the Croatian's loss of form, firing down 21 aces as he set up a quarter-final against Taylor Fritz.

What a result for @MariusCopil!

The World No. 93 Marin Cilic beats 7-5 7-6 (2) to advance to the quarterfinals @_Swiss_Indoors pic.twitter.com/PMAfXAoHQA

– Tennis TV (@TennisTV) October 24, 2018

Alexander Zverev's second seed became the first player to win his tally of victories for the season with a 6-4 7-5 first-round success against Robin Haase.

Stefanos Tsitsipas, winner of his maiden ATP World Tour title in Stockholm last weekend, saw off Jeremy Chardy 6-2 7-6 (7-3), while Ernests Gulbis or fifth seed Jack Sock to join Roberto Bautista Agut and Dusan Lajovic in the round of 16.

Kevin Anderson remains on course at the ATP Finals after Jurgen Melzer withdrew.

Grigor Dimitrov's slump continued in the Austrian capital, where Mikhail Kukushkin won 6-4 4-6 6-4 first-round defeat.

Kyle Edmund, another first-time ATP champion on Sunday, defeated Diego Schwartzman 6-3 7-6 (7-3), while Borna Coric moved into the final eight with Marton Fucsovics.

Gael Monfils and Karen Khachanov moved into the second round.