Dai Young’s side had not tasted defeat in the league since mid-November but looked in trouble at Sandy Park despite dominating the early proceedings.
Luckily for the visitors they were eventually able to find a way through as Simpson profited from Danny Cipriani’s late break to ensure three points apiece.
A pulsating encounter between two of the top four saw both sides score five converted tries, while Exeter managed to survive without Jonny Hill for the last 34 minutes after he saw red for a dangerous tackle.
Wasps took the lead on three occasions in the first half but were unable to pull away from the hard-working Chiefs, the hosts coming back each time to ensure parity at the break.
80 mins: FULLTIME. It’s a draw at Sandy Park in a crazy ten try game! Wasps extend their lead at the top of the table! 35-35 pic.twitter.com/2YPQLilAxO
— Wasps (@WaspsRugby) February 12, 2017
Luke Cowan-Dickie gave Exeter the lead early in the second half but Hill’s moment of ill-discipline handed Wasps a numerical advantage and Kyle Eastmond immediately capitalised to help tie things up once more.
Ollie Woodburn tilted matters back in Exeter’s favour but they could not hang on as Simpson ensured a share of the spoils and a sixth game without defeat in the league for Wasps.
The three points extended Wasps’ lead at the summit to five points, while Exeter move into third at the expense of Bath.
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