Sergio Aguero netted a second-half hat-trick as Manchester City narrowly avoided a major FA Cup upset at the hands of Watford.
The home side came back from two down at the break, to overcome an outstanding Watford performance prevailing 4-2 on an eventful afternoon at the Etihad Stadium, as City scrapped through to the fifth round.
The Championship side began brightly and deservedly took the lead when Fernando Forestieri opened the scoring after 21 minutes.
The home fans were then left shell shocked nine minutes later when Watford doubled their lead through Troy Deeney after the striker finished a flowing move, no more than their first-half display deserved.
City hit back on the hour through Aguero who turned home a cross from Aleksandar Kolorov, before the home side leveled as the Argentine curled home his second of the game after 78 minutes.
Watford's dreams of replay were shattered three minutes from time when Kolarov's speculative 40-yard drive somehow found it's way past Jonathan Bond in the Hornet's goal, before Aguero sealed their fate, completing his hat-trick in injury time with a well placed header.
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