Hull City became the latest club to breach Chelsea’s fragile defence and condemn the west London club to an unwanted record.Mohamed Belloumi’s 28th-minute leveller ensured the Blues have now gone 20 league games without a clean sheet for the first time in 65 years.Hull’s leveller ensured Chelsea reached the defensive milestoneThe Blues reached the unwanted feat in Saturday’s 2-2 draw with Hull at Stamford Bridge.It is the first time they have conceded two or more goals in the first four matches of a league campaign in ten years as well. Xabi Alonso’s side were aiming to banish the memories of last weekend’s defeat at Arsenal and started in blistering fashion.Morgan Rogers’ expertly-taken finish fired Chelsea into a seventh-minute lead but some suspect defending handed Hull a way back into the match.A hopeful ball into the box was misjudged by Jorrel Hato, allowing Belloumi to fire the Tigers level.Chelsea, who have conceded three times in two of their three home games in all competitions this season, once again showed their defensive frailties and talkSPORT co-commentator Steve Bruce issued his own scathing assessment.Defensive flaws“Absolutely atrocious from Chelsea,” Bruce said on Game Day Live. “A long punt up the middle. They haven’t dealt with that one for a start.“Then it’s gone into the corner flag, then they haven’t stopped the cross coming in.“The cross is one of these looping things that’s come into the box. “Hato’s misjudged it badly, got underneath it, bounced over the top of him and there was Belloumi to strike it with his left foot and give the ‘keeper no chance.The Chelsea boss was seen deliberating with his side as they chased a levellerGetty“It’s the first time they’ve been anywhere near Chelsea’s goal, I can’t remember the goalkeeper touching the ball but they’ve got themselves level.”Things got even worse for Alonso’s men just six minutes later when Belloumi lashed home from the edge of the box to fire the Premier League new boys in front.Chelsea got themselves back on level terms in the 66th minute when Joao Pedro produced a neat finish after good work from Cole Palmer down the left.But there is plenty of work to do for Alonso and his shaky backline who conceded three in the midweek Carabao Cup win over Leeds.The Spaniard lined up against Hull with a back four comprising of Hato, Wesley Fofana, Levi Colwill and Malo Gusto.The midweek cup goalfest followed Sunday’s 2-1 defeat at Arsenal and the 4-3 win over Brighton.Joao Pedro rescued a point for his team with a well-taken finishThe Blues set the tone for a potentially leaky campaign by shipping twice in their season opener at Fulham.Chelsea’s only clean sheet this season came in the 2-0 Carabao Cup victory over Luton Town last month.