West Brom consolidated their position at the summit of the Championship table with a hard-fought 1-0 win over Hull at the KCOM Stadium.
The Baggies didn't have it all their own way in East Yorkshire and Grant McCann's side were confident having won their last three outings, but it was an old face that came back to haunt the Tigers.
Jake Livermore, who spent three-and-a-half seasons as a Hull player before joining West Brom in 2017, scored the only goal in the 28th minute, firing home from distance.
The home side had their chances, with Kamil Grosicki spurning their most notable opportunity, but West Brom showed the grit of promotion contenders to ensure Livermore's strike was decisive.
Perhaps unsurprisingly it was Slaven Bilic's outfit who dominated the early encounters, but despite seeing most of the ball they failed to carve out any real chance of note inside Hull's penalty area.
That was until the 21st minute when Darnell Furlong was allowed space down the right-hand side to pick out Grady Diangana in the area with a teasing cross, only for the West Ham loanee to send his header over the bar.
Just two minutes later, though, Grosicki should have opened the scoring.
The Poland international's run into the area was picked out by Jackson Irvine but he lacked the conviction to make the most of the chance, putting his tame shot wide from 12 yards.
A short corner found its way to Livermore, who was in acres of space on the edge of the area, and he punished his old side for their slack defending by lashing the ball home.
The Tigers rallied before half-time and did find the back of the net themselves as the in-form Jarrod Bowen poked home, only to see his celebrations halted by a raised flag.
The Baggies weren't exactly in control in the second half but in the space of a minute they missed two great scoring opportunities.
First the lively Diangana dragged a shot wide of Long's goal after a neat piece of passing play on the edge of the area and moments later Matheus Pereira put a shot wide from a central position.
The Baggies, though, had done enough to maintain their two-point cushion at the top of the league.