Alexander Zverev's season is taking a very negative direction after his defeat to Jannik Sinner in the Australian Open final. The world number 2 – who dreamed of winning his first Major title at Melbourne Park – is still suffering from that clear defeat on the iconic Rod Laver Arena and has not yet recovered.

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.

Tallon Griekspoor upset No. 1 seed Alexander Zverev 4-6, 7-6 (5), 7-6 (4) in a second-round match at the BNP Paribas Open 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, avenging a devastating loss

Tallon Griekspoor stunned top-seeded Alexander Zverev 4-6, 7-6 (7/5), 7-6 (7/4) in the second round at Indian Wells on Friday, avenging a devastating loss to the German at Roland Garros last year.American Marcos Giron joined Griekspoor in posting his first win over a top-five player,

Tallon Griekspoor stunned top-seeded Alexander Zverev 4-6, 7-6 (7/5), 7-6 (7/4) in the second round at Indian Wells on Friday, avenging a devastating loss to the German at Roland Garros last year. Zverev,

Alexander Zverev’s hopes of becoming the men’s world No. 1 suffered a blow on Friday as he crashed out of the BNP Paribas Open at Indian Wells in the second round following a shock defeat to Tallon Griekspoor.

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,

Alexander Zverev's alarming slump in form continued as he was beaten by Tallon Griekspoor in his opening match at the Indian Wells Masters.