Well, if it was tactical, he has failed in that regards in two competitive matches. He did the same against Man City and it was glaring.

Respect for old players? Football is a very ruthless business. The reason why Guardiola keeps winning is because he makes every member of his team knows they are dispensable. Even though it's just one game, Liverpool don't want to lose ground to Man City. Those Manchester 'machines' can win their next 20 games without breaking a sweat!