With an opening game with 12 minutes, it seemed inevitable that the final among the two best players in the world would be a marathon.
In the end, Alcaraz and Sinner put everything at risk for five hours and 29 minutes – the longest French Final in history.
Just as the fifth set started around 18:45 BST, British player Naomi Broady had to make the call to change his travel plans.
“I just changed my Eurostar ticket, because I find it safe to say that I won’t do at 9 pm,” Broady said on BBC Radio 5 Live.
It was worth it, with an emotional saying after she felt “so lucky that I was here to witness it.”
“It looks like this will be a historic moment of our sport,” he added.
The former number a British Greg Russeski compared the Alcaraz to the Hungarian scapologist Harry Hardini, while in TNT sports, commentator Nick Mullins crowned him “King Carlos, the second – The Red King in the longest final of Roland Garros.”
“Carlos certainly did not invent his tennis, but he is perfecting,” added former British player Mark Petchey.