“We had so much pressure but it didn’t quite fall for us,” Nolan told West Ham’s official website on Wednesday.
“They’ve got a world class keeper that you have to beat and I thought he was top notch tonight. He made some massive, massive saves at times.”
Courtois has been arguably the best goalkeeper in the Premier League so far this season, and he was superb against the Hammers.
The Belgium international made no fewer than five saves, including one in the second half from Diafra Sakho, as Chelsea edged past their London rivals 1-0 away from home.
In total, the 22-year-old has kept eight clean sheets and has made an average of 1.87 saves per game in 23 Premier League appearances so far this campaign.
Courtois is the undisputed number one goalkeeper at Chelsea, and his performances over the past three or so years suggest that he could go on to succeed Bayern Munich’s Manuel Neuer as the best custodian on the planet.