Thomas Tuchel was largely happy following Chelsea's 2-0 Champions League quarter-final first leg win over Porto, but he did admit that both Timo Werner and Kai Havertz underperformed.
Mason Mount and Ben Chilwell provided two away goals in the first leg on neutral soil at Sevilla's Ramon Sanchez-Pizjuan.
However, the scoreline doesn't tell the story of the match where the Blues struggled for large sections against the Portuguese champions. It was partly because they struggled to create chances, aside from Mount's moment of magic, until both their German attackers were substituted in the 65th minute.