Harlequins coach Conor O'Shea revealed his pride after his team pulled off a tremendous 16-13 victory over Aviva Premiership leaders Northampton at Franklin's Gardens.
The Quins overcame the loss of John Andress and Nick Easter to the sin bin as they became the first team to win at Northampton this season.
O'Shea said: "It was a tremendous result in adversity. It's as adverse as you could get, 10-3 down at Franklin's Gardens with only 13 players. You can't coach that, it is all down to the hearts of the players and I am so proud of them."
Scrum-half Danny Care scored the decisive try in the second half when he charged down Stephen Myler's kick.
O'Shea was complimentary of Care's performance, saying: "For the first 10 minutes of the second half when we were down to 13 men Danny was excellent in marshalling our side as we moved the ball from side to side to waste time."
Harlequins had not won away from The Stoop in the Premiership this season, but put that right to start their year in style.
O'Shea said: "I am really pleased that we have broken our away day hoodoo and this gets us back in the mix in the Premiership. It's the most competitive one that I have known."
Northampton coach Jim Mallinder gave a straightforward explanation for his team's defeat.
He said: "We didn't play well enough, the Quins came here with a certain plan. They stopped our maul and stopped us getting into any rhythm.
"The first 10 minutes of the second half were crucial we didn't look after the ball during that time. We gave away three penalties and ran into touch twice."