The 19-year-old Alcaraz triumphed 6-4 3-6 6-4 4-6 6-3 in a match that completed at 2:23 a.m. native time — simply three minutes shy of the match’s newest end.
Alcaraz, the highest-ranked participant left within the males’s draw, will contest his second US Open quarterfinal when he takes on Jannik Sinner on Wednesday.
“It was unbelievable,” Alcaraz stated in his on-court interview. “After the fourth set, I had a lot of opportunities at the end, lost the fourth set.
“It was robust for me to return again within the fifth set, to remain sturdy mentally, however … the vitality that I obtained (from the gang) immediately made me win.”
Towards Cilic, in a match that lasted near 4 hours, Alcaraz led after the primary and third units however could not put his Croatian opponent away till the fifth.
He went a break of serve down at first of the match however fought again to win the following 4 video games and take the primary set.
There was an identical story within the second set as Alcaraz broke early earlier than Cilic reeled off 4 consecutive video games and held serve to stage the match.
The third set stayed on serve till Alcaraz broke at 5-4, however his 2-1 lead was reduce when Cilic broke late within the fourth — regardless of the teenager having break factors of his personal all through the set.
Because the match carried on effectively previous midnight, Alcaraz seized the benefit with a break to like at 2-1 and sealed the victory when Cilic pummeled a forehand into the highest of the web.
This was by far the hardest take a look at of the match to date for Alcaraz, who had not dropped a set previous to going through Cilic.
He subsequent faces one other rising star in 21-year-old Sinner — the Italian, like Alcaraz, hoping to succeed in a grand slam semifinal for the primary time.