The Hammers skipper was full of praise for the Irish defender after his goal cancelled out Stoke's opener on Monday evening
The former Bolton player's first-ever goal in the English Premier League cancelled out Jonathan Walters' opening goal for the Potters meaning that the game finished 1-1 and Nolan described the 26-year-old's contribution since joining the club as 'fantastic'.
"He had a tough two years out with a bad knee injury," Nolan told reporters after the game. "Last year he was fantastic and this year he has been even better, he is getting stronger and stronger.
"All the lads have a great camaraderie we were delighted for him," added the West Ham captain.
Joey O'Brien joined West Ham from Bolton Wanderers in 2011 and has been a regular at right back since moving to Upton Park.