Hull were the better side in the opening 45 minutes, with Sone Aluko causing no end of problems for the West Ham defence, but Andy Carroll latched on to a fumble from Tigers goalkeeper Allan McGregor to tap the ball into the net.
Then came the big turning point. Just after the hour mark, Hammers boss Sam Allardyce withdrew cautioned midfielder Mark Noble, and threw on the more creative Morgan Amalfitano.
The Frenchman had an instant impact, dinking home a delightful goal just three minutes into his cameo, before Stewart Downing wrapped up the point with a third goal.
Amalfitano stole the show though, with fans wondering why he doesn't start on a more regular basis having had a number of impressive displays this term.
With three goals and one assist this season, the 29-year-old is building a decent reputation in Claret and Blue, with fans now hoping that the former West Brom man will sign a new contract given that he's only on a one-year deal.
Here are some of the reactions from West Ham fans after Amalfitano's display against Hull...
For me it was Amalfitano who changed that game he was superb— Matt (@MGHAMMERS) January 18, 2015
Amalfitano is so underrated, one of the best players in our squad and can finish brilliantly.— West Ham Central (@WestHam_Central) January 18, 2015
Amalfitano is such a classy player. So good on the ball and what a cheeky finish for his goal— Terry Batcheler (@TerryBatcheler) January 18, 2015
Said it once and I'll say it again. Amalfitano one of the best bits of business we have done for donkeys ! So good on the ball. #whufc— Lee Pardon (@B1gLeeP89) January 18, 2015
I said it a few weeks back that Amalfitano is a class player and it's starting to show. How he doesn't start every week is a mystery.— West_Ham_COYI (@West_Ham_COYI) January 18, 2015
Amalfitano is slowly becoming one of my favourite players at West Ham at the moment— george (@GBJWHU) January 18, 2015
Really impressed with Morgan Amalfitano's goal. Pace, poise and skill. Transformed our midfield today. #COYI— Jon (@accordingtoJonD) January 18, 2015