Harlequins director of rugby Conor O'Shea believes the Aviva Premiership will be closer than ever this season after beating Exeter.
O'Shea underlined the importance of the win over the Chiefs on Saturday, in front of 74,827 at Twickenham in the Christmas spectacle.
Despite a three-try 19-3 lead at the break the hosts were unable to secure what would have been a valuable try bonus point.
Following a dismal run back in September and October though, Harlequins are now in fine form having defeated Racing Métro twice in the Heineken Cup and moved up to 4th in the league.
"We'll have emotional highs when we're playing well and emotional lows when we lose games and are written off, which will happen during the run in," said O'Shea.
"This will be the tightest Premiership ever, but we will be true to ourselves and will play the way we do.
"That was a very, very big win for us. It would have been lovely to get the bonus point and it's frustrating we didn't because we created a huge amount.
"But we played some magnificent rugby and if we play like that we'll be a tough team to play.
"Our aim after the difficult start to the season we had was to be in the top four at the halfway stage, which we are.
"We will get stronger and stronger and give it a good crack."