The story of the day was Sam Shakland's incredible brain-freeze, as he resigned in a drawn position to Anish Giri.

It was a baffling resignation by Sam | Photo: Alina l'Ami
I don't have any inside scoop on what happened there, but I do recall a similar ending from Nakamura's first victorious US Championship
More importantly, this win put Anish level with Magnus, with their head-to-head coming up in the last round. One cannot wish for more drama.
In the post-game interview, Giri talked a bit about what went on in the game. The Dutchman described what happened to Sam as "a hallucination of some sort", and then explained:
It is quite funny because the only way to lose is to resign, because if he wouldn't have resigned I wouldn't have been able to break through. Maybe Magnus Carlsen would, but I wouldn't be able to...
The full interview with Fiona Steil-Antoni:
Don't count Nepo out just yet. Ian shook off a disappointing loss in the previous round to Van Foreest to play a consistent game against his compatriot and fellow madcap, Vladimir Fedoseev.
Both players still need to learn to control their ambition. Nepo had no business entering a standard Najdorf against the youngster on Wednesday. Kids these days learn how to demolish Sicilian structures before they are old enough to drive. For Fedo, he remains my main man. He has an incredible will to win — nobody could win a game like he did against Teimour. However, the next day he played out of position against Giri.

Carlsen and Kovalev strolling during round eleven | Photo: Alina l'Ami
Another young player who seems to be on the rebound is Vidit Santosh Gujrathi. Today he followed his excellent win over Kramnik with a great effort against another rating favourite, the Azeri Shakhriyar Mamedyarov.
After this game, Shakhriyar is out of the '2800 club' and down to number five in the live ratings list, behind Giri. He is on 4/11 in the tournament, sharing second to last place with Van Foreest...but still half a point above Kramnik. The race for escaping the cellar is heating up.

It has not been a good run for Shak | Photo: Alina l'Ami
After a long string of disasters, Vladimir Kramnik finally notched his first win.
GM Yannick Pelletier recapped the action from round eleven
The Challenger Group saw only one decisive result, but an important one. Vladislav Kovalev defeated Parham Maghsoodloo to get level with the leader Maksim Chigaev, with the youngster Esipenko hot on their heels.

Kovalev and Chigaev will fight fiercely to get a spot in next year's Masters event | Photo: Alina l'Ami
Standings after Round 11 - Challengers