Copyright 2025 The Associated Press. All Rights Reserved. This image made from animation and provided by Tennis Australia shows Brazil’s Joao Fonseca during his ...

In the recent years, Daniil Medvedev, Taylor Fritz, Andrey Rublev, Stefanos Tsitsipas and even Alexander Zverev have not been lived up to their billing.

Teenage sensation Joao Fonseca eliminated Andrey Rublev in the First Round. Tennis’ young guns are announcing themselves on the biggest stage. Stefanos Tstipitias was the latest high-profile exit in Melbourne.

1573 Arena has LIFT OFF 🛫 Joao Fonseca sends the crowd wild after claiming the first set tiebreak 7-6 (6) against Sonego! 🇧🇷 #AusOpen • #AO2025 pic.twitter.com/X6KZclRq3k

Almost half of the men's singles top 10 seeds won't feature in the second week of the Australian Open after being knocked out by teenagers.

Backed by a raucous Brazilian contingent on Court 1573, Fonseca took the hour-long opener in the decider, eventually clinching set point at the fourth time of asking

Here's why each semifinalist can go on and lift the trophy:

Joao Fonseca delivered what he described as a 'rude' response to Novak Djokovic 's comments after becoming the breakthrough star of the Australian Open. Fonseca delivered a sensational display to stun Andrey Rublev in straight sets, beating the world No. 9 7-6 (1), 6-3, 7-6 (5) in the opening round on Tuesday.

American teenager Learner Tien produced arguably the biggest shock of the Australian Open so far as he defeated last year’s runner-up Daniil Medvedev in five sets, 6-3, 7-6 (4), 6-7 (8), 1-6, 7-6 (7).

Alex de Minaur busted through his Australian Open fourth-round ceiling with a brutal display against Alex Michelsen. Now, a date with world No. 1 Jannik Sinner looms.

The Irvine native and 19-year-old qualifier, who played one semester at USC, wins a 4-hour, 49-minute thriller that ends at nearly 3 a.m. in Melbourne

Updated and full entry list of players for the 2025 Dubai Championships, ATP 500 event, held from February 24th to March 1st, 2025, with Jack Draper and Daniil Medvedev.