One win in five, two in seven, three in 10, four in 13: it is fair to say Chelsea's form in the Premier League has been well below what is expected of a 'big six' team.
However, the poor run of results has combined with missteps from Manchester United, Arsenal and Tottenham, leaving Chelsea ahead of them in the race for the top four - though a two-season European ban for Manchester City is set to offer fifth place a route to the Champions League.
Despite leading Arsenal to just one win in his seven Premier League games at the helm, it is widely accepted that Mikel Arteta's impact since taking over the Gunners has been positive.
Questions were asked of Jose Mourinho's influence at Tottenham amid a run of four wins in 10 in all competitions, but a defeat against Chelsea on Monday could deal a huge blow for for Ole Gunnar Solskjaer at United.
The Red Devils have won three of their past seven in the top flight and five of their previous 11, so why is Frank Lampard not receiving the same level of scrutiny as his Norwegian counterpart?
A consistent approach
Although Lampard arrived at Chelsea with just one Championship season of managerial experience under his belt, he has implemented an attacking system with an increased passing tempo.
The players are comfortable in the positions they are deployed and can operate to the head coach's instruction, while he's also proved to be adaptable. A switch to a three-man defence and a high press earned a 2-0 win at Mourinho's Tottenham in December, while an in-game move away from that system after falling behind at Arsenal preceded a dramatic late turnaround for a 2-1 triumph.
A tactical switch resulted in United becoming the only team to deny runaway leader Liverpool a Premier League victory this season, but, in contrast to Chelsea's front-foot approach, Solskjaer’s sides tend to offer more on the counter, with his focus appearing to be on speed and hard running.
Lampard's stock with fans was already high due to his status as a club legend and that has improved by laying on a more positive style than what was witnessed under Maurizio Sarri. Solskjaer, in contrast, has failed to move enough away from the defensive football that resulted in Mourinho's sacking at Old Trafford.
A transfer embargo at the start of his tenure meant Lampard was unable to make any new signings after taking over from Sarri.
His focus on youth was a necessity, rather than out of choice, but he has still been bold in making Tammy Abraham his first-choice striker and trusting Mason Mount, Fikayo Tomori and Reece James to make the step up to first-team regulars a season after successful loan spells in the Championship.
Abraham, Mount and Tomori have experienced dips in the quality of their individual displays, but that is only to be expected from young players.
Solskjaer has also shown faith in academy products - Brandon Williams and Mason Greenwood are regular fixtures in the first-team squad.
However, their transfer policy has become the subject of much consternation. Executive vice-chairman Ed Woodward's house was attacked before a big-money deal for Bruno Fernandes was wrapped up in January, finally bringing an end to a saga that had been drawn out since the previous window. The arrival of Harry Maguire in the close season was similarly long-winded.
United appears to make a meal out of any major signing and is still yet to appoint a director of football to aid the process.
The structure at Chelsea is far clearer and while Solskjaer has been at pains to talk up his role in transfers, Lampard has made it clear such matters are largely out of his hands. By voicing his displeasure at a lack of signings in January, he cleverly moved to absolve himself of any blame.
Great (or not so great) expectations
The season was essentially a write-off for Chelsea before it had even started, a place in the top four would likely have been considered an overachievement.
Since being appointed permanently in March, Solskjaer has had to contend with failing to keep United at the level he inspired it to during his initial interim reign – he won his first eight games and 14 out of 19, while also securing a place in the Champions League quarterfinals before being appointed permanently in March. It took him until December to rack up another 14 victories.
The availability of Mauricio Pochettino, so often linked with United, has only served to sharpen the focus on the Norwegian and increase the speculation over his position.
A poor result against Chelsea will no doubt ramp it up further.
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