Championship side Reading got the better of Premier League outfit West Brom 3-1 at home in the fifth round of the FA Cup.
After a goalless first half, Darren Fletcher opened the scoring for Baggies in the 54th minute.
Reading restored parity through a Paul McShane header, Michael Hector nodded in the second for the hosts, and Lucas Piazon wrapped up the scoring in injury time.
Roberts, who played for both Reading and West Brom, has taken to Twitter to give his reaction to the final result.
Over the course of the 90 minutes at the Madejski Stadium, hosts Reading had 55% of the possession, took 11 shots of which five were on target, and earned five corners.
Visitors West Brom had 45% of the possession, took 10 shots of which just two were on target, and earned five corners.