Theo Walcott scored a first-half hat-trick as Arsenal ended the Premier League season, with great flourish.
Walcott set the tone with a strike that flew in off the underside of the crossbar. He followed that with a predatory finish before completing his treble with a tap-in – all in a matter of 32 minutes.
Jack Wilshere got in on the act with his own goal of the month contender, a crisp volley into the top corner from the edge of the box.
And there could easily have been more from Aaron Ramsey as his goal bound efforts hit the cross bar twice.
Arsenal easily overwhelmed West Brom time and again by their rampant attacks.
Gareth McAuley headed a consolation for the visitors in a rather less eventful second half, but Arsenal had done more than enough to grant Arsène Wenger’s wish and “send the fans home happy”.
A carnival atmosphere was a welcome change to the nail-biting climaxes of recent campaigns. Arsenal have comfortably secured a top-three finish for the first time since 2012 and will not need to navigate a Champions League play-off at the start of next season.
In other matches, Newcastle survived relegation by beating West Ham 2-0. Manchester City further secured their runner-up status by beating Southampton 2-0 and new Champions Chelsea overwhelmed Sunderland 3-1.
Leicester were merciless in their 38th game, beating QPR 6-1 and Liverpool disappointed away to Stoke City, losing 1-5.
There were no relegation fears for Aston Villa despite losing by a lone goal to already relegated Burnley. Rather it was Hull City that plunged to relegation after playing a barren draw with Manchester United, who ended up fourth on the league table.