A quickfire double from Jesus saw Pep Guardiola's men cruise into a two-goal lead inside 23 minutes, but the Hornets halved the deficit before the half-hour through Hassane Kamara.
However, Rodrigo swung the match back in City's favour when he volleyed home an unstoppable drive into the top corner of Ben Foster's net before the break.
And the scoring was complete inside eight second half minutes when Jesus confidently converted a penalty to complete his hat-trick, before slotting home Kevin De Bruyne's cutback soon after.
CITY+ subscribers can relive a memorable triumph in the video above, as our Pitcam brings you closer to the action than ever before.
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It provides access to a host of CityTV documentaries, as well as full match replays of our first team and women’s sides and selected EDS and Academy games.
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