Sam Skinner scored with a minute remaining to go for Exeter to reduce Saints lead to a slender point.
However, Joe Simmonds’ conversion attempt never happened as he began his run-up, allowing a fair charge-down with the game ending 13-12 Northamptons.
Fans were not happy, taking to social media to share their ‘disgust’ with the decision.
All Black legend Dan Carter ranks his five toughest opponents
4&5. Brian O’Driscoll & Paul O’Connell (Ireland)
“Two giants of the game that have worn the green jersey were Paul O’Connell and Brian O’Driscoll. Their work rate and how they conducted themselves on and off the pitch was exemplary.”