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Toto Wolff has warned Lewis Hamilton that Mercedes’ upgrade is unlikely to provide a swift end to his losing streak. Hamilton and team-mate George Russell were given their first taste of the team’s revamped machine in Monaco. Hamilton and Russell qualified sixth and eighth, before making up two and three places respectively in Sunday’s rain-hit race following an early call to move from slick to wet rubber. Traditionally, the Monte Carlo layout has been among Mercedes’ worst tracks with this weekend’s race at the Circuit de Catalunya in Barcelona set to represent a truer reflection of the team’s outright speed. But Wolff believes he did not see enough progress from their upgraded car to suggest they will immediately move ahead of Aston Martin and Ferrari in the pecking order, or challenge Max Verstappen’s Red Bull team who have won all six races this year. “We need to be careful,” said team principal Wolff. “We will collect more data in Barcelona, but I don’t expect us to clear Ferrari and Aston Martin there either. “It is about understanding what does this car do now and how do we set it up? “We are good at grinding away. Last year, the package was terrible at the beginning of the season, and we won a race in Interlagos [at the penultimate round] so we will get there.” Hamilton finished 39 seconds behind Verstappen on Sunday as the Dutchman claimed his fourth victory in six races to extend his championship lead to 39 points. Red Bull have now won 15 of the last 16 grands prix, with Verstappen, who grazed the wall en route to taking the chequered flag in Monte Carlo, remaining on course to race to his third world title in as many years. Asked if Verstappen’s dominance is proving to be a turn-off for the sport, Wolff replied: “When you win in Formula One it is a meritocracy. “They have done a good job and the car is fast in all conditions and the driver is at the top of his game. “We need to do a better job, catch up, find intelligent solutions and hope our development slope is steeper than theirs, and eventually fight again. “Whether it is good for the show or not, a strong fight between 10 drivers, or at least two, is obviously much better for all of us, but we have to accept it and work to get back there. “The best driver in the best car spending the same money wins the championship, and if you break the rules you should be heavily penalised, but only then, and you should not be penalised for simply doing a good job.” Read More Concerns Monaco GP could be ‘left behind’ as Max Verstappen wins ‘boring race’ Wolff fumes as Hamilton’s F1 car floor displayed during removal from Monaco track Fernando Alonso ready to pounce if Max Verstappen makes a slow start in Monaco Max Verstappen fends off Fernando Alonso to take pole position in Monaco Lewis Hamilton reveals impact of Mercedes updates in Monaco F1 2023 calendar: Every race this season

Mauricio Pochettino has been appointed Chelsea manager on a two-year deal. The former Tottenham coach, who has been out of work since leaving Paris St Germain last year, will take over from interim boss Frank Lampard who oversaw his final game in charge against Newcastle on Sunday. It brings to an end an almost two-month process to find a permanent successor to Graham Potter, who was sacked on April 2. The PA news agency understands Pochettino had been the club’s first choice from early in the search, which was led by co-sporting directors Paul Winstanley and Laurence Stewart. He was the only candidate the club got into serious talks with, despite conversations that took place with former Bayern Munich boss Julian Nagelsmann, ex-Spain coach Luis Enrique and Burnley’s Vincent Kompany. The new manager, whose contract includes an option for a third season, will work closely with Winstanley and Stewart as the club look to rebuild after their worst season in 30 years. Read More Charity boss speaks out over ‘traumatic’ encounter with royal aide Ukraine war’s heaviest fight rages in east - follow live

Make enough decisions and the law of averages dictates that even Todd Boehly will get the odd one right, sooner or later. In Mauricio Pochettino’s case, it is certainly later: Chelsea could have appointed him manager eight months ago and plumped instead for the sadly miscast Graham Potter. And so, as Pochettino’s task involves clearing up Boehly’s mess and turning chaos into something cohesive, it feels rather fitting that he begins with first-hand evidence that poor decision-making has consequences. If Pochettino is potentially the solution in this belated union, Chelsea may represent the problem. But it is significant that the supposed ethos of the new regime – before they instead became indelibly associated with chronic, clueless overspending and extraordinary underachievement – actually matched Pochettino’s principles. Much of his work at Stamford Bridge is simply to repeat the job he did at Tottenham, albeit with the significant caveat of adding trophies on top. But restoring a club to the Champions League, rebuilding relations with the support, engendering a feeling of positivity, developing young players and producing an exciting, attacking brand of football: Chelsea do not need to look far across the capital to see that Pochettino has already done that. And this, supposedly, was what Clearlake Capital was going to be about, not the hire-and-fire short-termism of Roman Abramovich’s Chelsea. Now, after two sackings in a season, Chelsea are in greater need of a Pochettino-style reboot. Admittedly, a complication is that, while Potter had a contract to 2027, Pochettino’s deal is only until 2025, with an extra year a club option. The undistinguished David Datro Fofana’s contract will still be twice as long as Pochettino’s; Mykhailo Mudryk’s will have a further six years. He begins hamstrung, to some extent, by Chelsea’s conviction that they had owned the future with their transfer-market business. If Thomas Tuchel used to describe the squad he took over as a “gift”, Pochettino’s inheritance is part present, part hospital pass. He needs the owners to have the competence to clear out the players he does not want; a task they seem to have underestimated amid the influx of signings. Part of Pochettino’s initial success at Tottenham entailed identifying a new core as he dispensed with senior figures such as Younes Kaboul, Emmanuel Adebayor, Aaron Lennon, Paulinho and Etienne Capoue. Chelsea could do with similar decisiveness and clarity of thought. They have used 32 players in the Premier League this season, second only to Nottingham Forest, and made over 130 changes to the starting 11, by far the most, which speaks of Potter’s unsuccessful compromises to involve everyone and Lampard’s muddled attempts to find a fix. With no European football next season, they have still less need of a cast of thousands. If Pochettino, with his prowess as a man-manager, may have to reengage some of the disillusioned and to unite the disparate parts of Chelsea’s squad, the actual number of players has to be manageable. He may have the initial impediment that Mason Mount, one of those best suited to his style of football, is a potential departure; Chelsea’s extravagant outlay has created a need to sell and too many others look either deadwood or unlikely to bring in meaningful fees. The danger is they lose those they want to keep and keep those they want to lose. Somehow, amid 16 signings and £600m of expenditure, Chelsea have created the perception that they still require at least three major additions: a goalkeeper, an actual defensive midfielder as their £107m midfielder, Enzo Fernandez, may not be one, and a striker. It is a difficult juggling act: one of the telling factors could be if Romelu Lukaku proves his Stamford Bridge version of Adebayor or Harry Kane. It was one of the damning elements of Potter’s reign that, despite an ability on the training ground that helped players at his previous clubs to progress dramatically, no one got better at Chelsea and many regressed. The exponential improvement of Tottenham’s youthful players – personified, in their different ways, by Kane and Dele Alli – and the way everyone reached new levels under Pochettino always offered reasons to choose and trust him. The latter element may be significant: the feeling is that too many of Clearlake Capital’s off-field appointments are yes men for Boehly and co. They have proved woefully poor judges and negotiations ought to have given Pochettino the licence to pursue his own path. Perhaps, after the madness of Paris Saint-Germain – though Chelsea is a different sort of madness and it is notable that Tuchel, the first manager Boehly sacked, accomplished more in the French capital than Pochettino – the Argentinian needs a project. Chelsea provide one: Andrey Santos and Malo Gusto will arrive in the summer and Levi Colwill is due to return to add to the battalion of young players – Mudryk, Fernandez, Benoit Badiashile, Wesley Fofana, Carney Chukwuemeka, Armando Broja, Noni Madueke, Marc Cucurella, Cesare Casadei, Lewis Hall – who provide the raw materials that could be shaped into something. In some cases, Pochettino will first have to repair dents to their confidence or game done in a disastrous season but at least some of that potential could be realised. It is nevertheless a remarkable scenario that a team who won the Champions League two years ago now seem to have to start from scratch but Pochettino has to provide an identity, to add a style of play to a team with none, to get goals from a side who have only outscored Wolves, Bournemouth, Southampton and Everton this season. It amounts to an astonishingly big job, because, in footballing history, elite clubs have rarely got as many things wrong as Chelsea have in the last year. But he has the pedigree and personality required to manage a superpower, which Potter lacked, and perhaps this year will engender an understanding that could buy him time. Because taking over Chelsea at such a low ebb means that, however quickly or slowly, there is surely only one direction in which they can go. Read More Football rumours: Barcelona set sights on Bruno Guimaraes Frank Lampard believes Chelsea standards have slipped as cheerless campaign ends Easy in the end for Manchester City – same again next season? Chelsea still a ‘fantastic’ job insists Lampard - but also a ‘problem’ Frank Lampard: Chelsea must avoid knee-jerk decisions if they are to recover Tottenham identify leading candidate to be next manager