Greek youngster Stefanos Tsitsipas feels he "can do something good" against 17-time Grand Slam champion Rafael Nadal in Thursday's Australian Open semi-final.
Tsitsipas, 20, beat Swiss great Roger Federer in the last 16, then reached his first major semi-final with victory over Spain's Roberto Bautista Agut.
However, Spain's Nadal, 32, has not dropped a set in Melbourne.
But the second seed conceded: "Stefanos is ready to win against everybody."
The pair meet on Rod Laver Arena at 08:30 GMT, with live coverage on the BBC Sport website and BBC Radio 5 live.
The women's semi-final between Czech eighth seed Petra Kvitova and unseeded American Danielle Collins takes place from 03:00, with the last-four match between US Open champion Naomi Osaka and Czech seventh seed Karolina Pliskova following on Rod Laver Arena.