Pep Gaurdiola side Manchester City sweep into the FA Cup quarter - finals after battling back to beat much replaced championship promotion hopefuls Huddersfield in their fifth - round reply.
Afterwards a 0-0 draw in the original tie, David Wagner side led when striker Harry Bunn's shot went through Manchester City's goalkeeper Claudio Bravo's legs.
Although tap-ins from winger Leroy Sane and defender Pablo Zabaleta alongside striker Sergio Aguero's analytic penalty in between, turned the reply in City's favour before half - time.
Former Atletico Madrid striker Aguero swept in winger Raheem Sterling's cross at the near post for the host fourth, before substitute striker Kelechi Iheanacho poked in with last kick of the match.
Manchester City's profit is a quarter - final trap to Premier League rivals Middlesbrough on Saturday,11 March.
City's manager Pep Gaurdiola visit at Ethihad last summer with the clear consign from owner Sheikh Mansour to take the club to "A New Level".
Although that appeal in largely thought to mean success in the UEFA Champions League, the City order will also want to see the former Barcelona and Bayern Munich manager carry domestic trophies.