Flavio Cobolli breaks Alexander Zverev’s serve in the first game of the fourth set, taking a key advantage during their match. Multiple reports describe Cobolli’s momentum as he turns the set with an early service break, prompting the immediate shift in the contest’s rhythm. The coverage from Brisbane Times, The Age, and the Sydney Morning Herald is consistent on the timing and nature of the pivotal moment: Cobolli breaks Zverev’s serve to start the fourth set, then gains momentum following that successful return. The reports do not add conflicting details about who initiated the break or which game it occurred in, indicating broad agreement on the sequence at that stage of the match. The match context beyond the fourth-set break is not detailed in the provided excerpts, but all sources converge on the same event as the standout development in the later portion of the match.