Exeter cruised to a first win of the season, running in six tries including a double for Jack Nowell in a 38-11 win over London Irish at Sandy Park.
Gareth Steenson, Dom Armand, Luke Cowan-Dickie and James Short scored the other tries for the Chiefs, while Irish managed just one try, from Scotland flanker Blair Cowan.
With both sides coming into this one searching for their first victory of the season, it was Exeter who made the first move onto the scoreboard with the opening try 12 minutes in.
On his 150th appearance, Steenson found himself in a heap of space and gratefully nipped ahead to go over for the first score of the game.
He couldn't add the extras, and Irish cut the deficit through Chris Noakes' opening kick of the game.
But seven minutes later, Exeter made more early pressure count as they went over for their second try of the night. With Exeter gradually moving themselves forward, it came to Armand who finally found enough space to wriggle through and put Chiefs into a dominant position, even more so due to Steenson's conversion.
And five minutes later, a superb first 30 minutes improved drastically thanks to Cowan-Dickie, touching down at the back of a maul as Exeter were rampant. Steenson's conversion took the home side into a 16-point lead with less than half an hour played.
Noakes' second penalty heading towards half-time reduced that lead, but it was Exeter going into the break with the game theirs to lose.
Exeter grabbed their fourth just two minutes after the restart, Short going over in the corner after confirmation from the TMO, after superb handling, with Steenson adding to what was becoming a healthy lead.
And four quickly turned to five. Nowell's perfectly kick through and chase allowed him to race down the field before going over the line as Chiefs grabbed their fifth try on a memorable night at Sandy Park.
Irish did finally have a little to celebrate when they grabbed their first try of the night. A hard fought maul saw Cowan go over to drag his side onto double figures, Noakes' conversion salvaging some pride.
They thought they had gone over as the clock wore down, only for the TMO to again interfere against the visitors, ruling that Tom Fowlie hadn't made it over with Chiefs able to maintain their 20-point lead.
And with two minutes to spare, that increased furthermore. Nowell went over for his second of the night from an Irish attack that fell apart. Shane Geraghty's kick wasn't claimed, and Nowell was able to dive in and go over for number six of a dominant night for Exeter, Steenson converting again to seal a superb victory.
Tries: Steenson, Armand, Cowan-Dickie, Short, Nowell 2
Cons: Steenson 4
For London Irish:
Pens: Noakes 2
Exeter: 15 Phil Dollman, 14 Jack Nowell, 13 Henry Slade, 12 Ian Whitten, 11 James Short, 10 Gareth Steenson (c), 9 Will Chudley, 8 Thomas Waldrom, 7 Don Armand, 6 Dave Ewers, 5 Damian Welch, 4 Mitch Lees, 3 Tomas Francis, 2 Luke Cowan-Dickie, 1 Ben Moon.
Replacements: 16 Jack Yeandle, 17 Alec Hepburn, 18 Moray Low, 19 Geoff Parling, 20 Julian Salvi, 21 Dave Lewis, 22 Sam Hill, 23 Olly Woodburn.
London Irish: 15 Topsy Ojo, 14 Alex Lewington, 13 Tom Fowlie, 12 Eoin Griffin, 11 Aseli Tikoirotuma, 10 Chris Noakes, 9 Brendan McKibbin, 8 Rob McCusker, 7 Luke Narraway, 6 Jebb Sinclair, 5 Matt Symons, 4 George Skivington (c), 3 Halani Aulika, 2 David Paice, 1 Tom Smallbone.
Replacements: 16 Gerard Ellis, 17 Tom Court, 18 Leo Halavatau, 19 Eoin Sheriff, 20 Blair Cowan, 21 Scott Steele, 22 Shane Geraghty, 23 Sean Maitland.
Venue: Sandy Park
Referee: Andrew Small
Assistant Referees: Andrew Pearce, Wayne Falla
TMO: Geoff Warren