After beating Manchester City twice, across two competitions, and knocking Real Madrid out of the Champions League at the semi-final stage, a relentless Chelsea looked certain to secure a top-four finish in the Premier League.
However Arsenal, having failed to qualify for the Champions League themselves, who ensured that their London rivals wouldn't have it all their own way in the final few weeks.
Emile Smith Rowe's first-half strike was the only goal in a 1-0 win at Stamford Bridge. The assist will go down as Pierre-Emerick Aubameyang's but it was Jorginho's calamitous back pass that allowed unfancied Arsenal the chance to open the scoring.
Equally, Tuchel admitted fault with his team selection, having chosen to rest key players like Timo Werner, Antonio Rudiger and N'Golo Kante ahead of the FA Cup final this weekend.
However, it came to light in Tuchel's post-match interview on Chelsea FC's Fifth Stand app that Kante was carrying a minor injury.
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