Super-sup Charlie Austin fired Albion back to the top the Championship with two late goals against rivals Birmingham City.
The Baggies had to come behind twice after Blues scored early goals in both halves. Grady Diagana quickly levelled the scores in the first half before Austin stole the show with goals in the 73rd and 81st minutes.
The victory sent Albion two points clear at the top of the league after Leeds’ unlikely collapse at home to Cardiff.
Slaven Bilic made three changes to the side which drew at Wigan in midweek with Diagana, Matheus Pereira and Hal Robson-Kanu all recalled.
But it was Blues who came out of the traps fastest with Albion behind inside the first three minutes when Lukas Jutkiewicz powered a header home from close range.
Albion fired back almost instantly when Grady Diagana did well to keep himself onside to fire home after Matty Phillips ‘drilled cross. Hal Robson-Kanu then wasted Albion’s best chance to the take the lead when his header glanced harmlessly wide.
Blues again came out of the traps firing after the break and Harley Dean scored an unlikely header two minutes into the second half.
Bilic rang the changes as he searched for a way back into the game and subs Austin and Darnell Furlong changed the game for Albion as the Baggies boss switched to a 3-5-2 formation.
Austin’s first was a wonderful volley into the top corner after good work from Pereira and Jake Livermore found the striker on the half-turn on the edge of the area.
The goal brought Albion back to life and Furlong strode down the right and sent in a tempting cross that Austin headed firmly into the bottom corner to complete the Baggies’ late comeback and win him the man of the match award.