Albion claimed a crucial 2-1 win against Coventry City at The Hawthorns on Friday evening.
The victory was secured after two excellent first-half goals by Mikey Johnston and Grady Diangana, despite Haji Wright’s second period penalty.
Carlos Corberán’s men, now three matches without defeat and still fifth in the Sky Bet Championship, next face QPR away this Wednesday.
The boss named an unchanged XI from last weekend’s draw with Hull - and his side made a superb start under the lights.
There were only six minutes on the clock when Johnston produced yet another excellent individual effort, beating a host of Coventry defenders and bending home a fantastic finish for 1-0.
The visitors did threaten a few times, notably via Victor Torp and Kasey Palmer attempts, but it was Albion who scored again, doubling their advantage at the end of a flowing passing move as Diangana volleyed Tom Fellows’ cross in off the post.
There were chances at both ends following the interval - Johnston smashing over before Alex Palmer saved volleys by Coventry’s Palmer and Torp.
City began to put Albion under some serious pressure and did eventually pull one back on the 73-minute mark. Palmer was fouled in the area and substitute Wright stepped up to convert the spot-kick.
Corberán quickly made changes, introducing Nathaniel Chalobah and Kyle Bartley in an attempt to sure things up.
Ellis Simms struck over and Josh Eccles shot wide late on, however the Baggies showed grit and determination, seeing the game out to secure three important Championship points.
Albion: Palmer; Furlong, Kipre, Pieters, Townsend (Reach 65); Yokuslu (Chalobah 69), Mowatt; Fellows (Bartley 80), Diangana (Weimann 69), Johnston (Swift 65); Wallace.
Substitutions: Griffiths, Ajayi, Pipa, Marshall.
Attendance: 24,839 (1,980).