West Brom dug deep when it mattered most to turn around an earlier set-back into an emphatic comeback victory at the Hawthorns.
After going a goal down after Robert Snodgrass connected with an Ahmed Elmohamady cross, the Baggies returned for the second 45 as a revitalised team with the bit between their teeth.
Striker Chris Brunt instantly made amends for Tony Pulis' side, sending a header crashing into the roof of the Hull goal.
Defender Gareth McAuley soon followed suit and rose highest to bury a header of his own, before James Morrison put the icing on the cake for the Midlands team and wrapped up the first win of 2017.