Tottenham’s lavish summer outlay of approximately £237m counted for nothing as Brentford dismantled them 3-0 at the Gtech Community Stadium in a bruising Premier League opener.The north London club had broken their transfer record twice during the window, headlined by the £100m arrival of Sandro Tonali, in a bid to prevent another campaign like last season’s, which saw them secure survival only on the final day.Four new recruits — Andy Robertson, Marcos Senesi, Jan Paul van Hecke and Tonali — were handed starting berths in west London, yet Roberto de Zerbi’s expensively assembled side were thoroughly outclassed by their hosts.Brentford needed just 12 minutes to take the lead, with full-back Keane Lewis-Potter left completely unmarked to finish inside the area after being found by club record summer signing Mamadou Sangare.Brentford new signing Mamadou Sangare was the clear man of the match after an impressive display | GETTYSangare was outstanding throughout as the Bees overwhelmed their London rivals. Their second arrived when Vitaly Janelt tapped home after goalkeeper Antonin Kinsky could only parry a Mathias Jensen effort.The scoreline flattered Spurs at the break. De Zerbi’s men were unable to muster even a single attempt on target across the opening 45 minutes, while Brentford played with relentless intensity and attacking purpose throughout.De Zerbi responded at half-time by introducing £85m recruit Mateus Fernandes and Rodrigo Bentancur in place of Conor Gallagher and Lucas Bergvall.The changes failed to stem the tide. Kayode made it three after Sangare’s strike was saved, with the loose ball falling kindly into the defender’s path.Roberto De Zerbi has spent lavishly this summer but it failed to spur Tottenham on | GETTYMatters nearly deteriorated further when Bentancur brought down Kevin Schade inside the box, with referee Michael Oliver awarding a penalty.Spurs were spared additional embarrassment only by the woodwork, as Igor Thiago’s spot-kick cannoned off the post and bounced clear despite Kinsky having dived the wrong way.Collins, who captained the side, spoke to Sky Sports after the final whistle with evident satisfaction. Brentford managed a total of 26 shots against Tottenham, the most they have ever managed in the Premier League | GETTY”It’s the start we wanted. We wanted to start bright, start sharp and we want to show what we’re made of. That’s today,” he said.The defender referenced last term’s agonising near-miss, with the Bees finishing a single point shy of European qualification. “Last season we were hurt. We’ve added quality to the squad and wanted to show we’re about again,” he added.On Sangare’s impressive debut, Collins was characteristically understated: “He’s alright. “He started ok. We want more goals from him, more tackles.”