Nick Kyrgios candidly delivered two key reasons why he's convinced Team World will upset Team Europe for the first time in Laver Cup history this weekend.

Kyrgios, who owns career wins over both Team Europe superstars Roger Federer and Rafael Nadal, says Team World has a deeper bond and that his personal experience beating iconic champions has taught him ranking "is the most overrated thing ever." 

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"I'm closer with these guys than Europe with each other," Kyrgios told the media at today's Laver Cup launch press conference in Geneva. "I mean, I'm personally not scared of that team. I have beaten every single one of their members, and I know guys on my team have beaten them before, as well.

"I mean, yeah, on paper we're undermanned and we're an underdog, but I don't believe that , I strongly believe that we can win. Like we have been so close the last few years. We have had match points to win the whole thing. John had match points against Federer. I had match points against Federer. We got super unlucky."

Though Team Europe boasts five of the world's top seven-ranked players in Nadal, Federer, Dominic Thiem, Alexander Zverev and Stefanos Tsitsipas, while Team World's highest-ranked player is world No. 20 John Isner, Kyrgios says ranking is meaningless in the three-day Laver Cup format. 

"I think ranking is the most overrated thing ever," Kyrgios said. "I strongly believe we are going to win. I mean, we are underdogs, for sure, but I sit in this chair believing... Tomorrow I think Shapo is going to go out there, and I think Thiem, honestly, he's not going to be wanting to play Shapo at all."