Timo Werner trades in goals and he knows they are the measure of a striker.
When he scored 34 for RB Leipzig last season it triggered a £48million transfer scramble. There were 19 for his club in the season before that, and 21 in each of the first two years after joining from Stuttgart.
This first campaign at Chelsea has, he admits, been tough. And to claim the only goal in a crucial victory at West Ham came as a huge relief, as it put Chelsea in the box seat in the top-four race.