GUADALAJARA, Mexico (Reuters) -Defending champion Magdalena Frech was sent packing from the Guadalajara Open after a 7-5 6-4 quarter-final defeat by 19-year-old Czech Nikola Bartunkova on Friday, while German sixth seed Tatjana Maria was knocked out by Elsa Jacquemot.

Bartunkova secured the win over Polish fourth seed Frech – who won the WTA 500 hardcourt tournament last year by beating Australia’s Olivia Gadecki in straight sets in the final – in one hour and 38 minutes to advance to her first WTA semi-final.

Maria, the Queen’s Club champion, was another casualty as the 38-year-old fell to Frenchwoman Jacquemot 3-6 6-4 6-4 in the quarters.

American 17-year-old Iva Jovic continued her impressive run, recovering from a second-set wobble to take out Andorra’s Victoria Jimenez Kasintseva 6

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