United ran riot at Elland Road with four unanswered goals - the first scored by Pablo Hernandez after just 16 seconds - to reclaim their position at the top of the Championship and round off a week in which their head coach was forced to defend the durability of his squad.
Bielsa was photographed in a demoralised pose after Leeds lost 1-0 to Queens Park Rangers on Tuesday but post-match questions at Loftus Road about whether his squad were at risk of burning out - an accusation made about other teams managed by him - were emphatically dealt with by Leeds’ biggest win of the season.
Bielsa admitted he had let his guard drop at QPR by allowing himself to look so despondent but United’s players rallied with a performance which swept fourth-placed West Brom aside.
United’s display was a dramatic statement to the clubs around them in the table and Norwich City, who dropped to second place, will attempt to respond away at Millwall on Saturday afternoon.
Sheffield United meet Sheffield Wednesday in a Steel City derby on Monday night.
Bielsa kept his satisfaction in check, saying: “On Tuesday I shouldn’t have shown myself to be so disappointed but I don’t think I should be very happy tonight either.
“We should underline the reaction of the players individually and collectively but I don’t want to underline the result or the win because we’ve already produced performances similar to the one tonight. We have to recognise the great spirit of the team.”
Asked if Leeds have delivered a perfect performance, Bielsa said: “I don’t want to make excessive comments.
“When you win a game by a big difference it’s better to be moderate in your analysis. The rival also deserves that you’re moderate in the analysis.”