Tallon Griekspoor stunned top seed Alexander Zverev 4-6, 7-6 (5), 7-6 (4) in a 3-hour, 7-minute second-round clash Friday at the BNP Paribas Open. And No. 4 seed Casper Ruud fell to American Marcos Giron in the other big upset of the day.

That’s Zverev right now, who lost to Tallon Griekspoor of the Netherlands, 4-6, 7-6 (5), 7-6 (4) in his first match at Indian Wells — as the top seed no less — on Friday.

Tallon Griekspoor upset top seed Alexander Zverev 4-6 7-6(5) 7-6(4) in a marathon second round clash at Indian Wells on Friday. The Dutchman collapsed on the court after converting his sixth match point to end an absorbing three hour,