Alcaraz was overwhelmed 4-6 7-6 (7-5) 6-4 by France’s Monfils in a second spherical match carried over from the day gone by due to rain.
The 21-year-old Spaniard, who has received the French Open and Wimbledon titles this yr, smashed his racquet after failing to interrupt Monfils, 37, within the third set.
“I felt typically that I wished to interrupt the racquet,” stated Alcaraz. “It by no means occurred earlier than, as a result of I may management myself in these conditions, in these emotions.
“More often than not I may management myself and it may go higher within the matches or within the scenario that I have been feeling earlier than.
“At this time, I could not management myself, as a result of, as I stated, I used to be feeling that I used to be not enjoying any form of tennis.”
The match resumed in a second set tie-break which Monfils received earlier than claiming the decider for victory.
“I felt prefer it was the worst match that I ever performed in my profession,” stated Alcaraz.
“I could not play. Actually, I have been working towards very well right here on this event. The earlier days, I used to be feeling nice, hitting the ball clear, transferring effectively. I do not know what occurred.
“I do not understand how I felt like this, however I could not management myself. I could not be higher. So this match, it was unimaginable to win.”
Monfils went on to play Rune afterward throughout the identical day and was overwhelmed 3-6 6-3 6-4 by the Dane.
In the meantime, ladies’s world primary Iga Swiatek made it into the Cincinnati Open quarter-finals with a snug 6-2 6-2 win in opposition to Marta Kostyuk.
She is going to play Mirra Andreeva, who beat Italy’s Wimbledon finalist Jasmine Paolini 3-6 6-3 6-2.
“I am comfortable I used to be stable. I used to be disciplined with all of the issues that I wished to care for,” stated Swiatek.
Aryna Sabalenka secured a 7-5 6-2 victory in opposition to Elina Svitolina, whereas Jessica Pegula received a delayed second-round match in opposition to Karolina Muchova 5-7 6-4 6-2 earlier than beating Taylor Townsend 6-2 6-3 in her second match of the day.