Albion's forgotton man Kenneth Zohore fired the Baggies into the FA Cup Fourth Round after a 1-0 victory at The Valley against Charlton.
Zohore made a rare start up front as Baggies boss Slaven Bilic rang the changes from the side which drew with Leeds United.
The forward played a neat one-two with Kyle Edwards on the edge of the Charlton area in the 32nd minute before firing the ball under the legs of Addicks 'keeper Dillion Phillips.
The former Cardiff striker was one of 11 changes made for the FA Cup tie as Bilic rested a host of players.
Jonathan Bond, Connor Townsend, Ahmed Hegazi and Academy graduates Dara O'Shea played at the back alongside debutant Jack Fitzwater.
The experience Chris Brunt and Gareth Barry played alongside Rekeem Harper in midfield with Kyle Edwards and Charlie Austin alongside Zohore.
Despite the changes, it was Albion who fashioned the best chances with Brunt and Austin both hitting the woodwork in the second half as the visitors pushed for a second.
However, it was Charlton who almost forced a replay when Josh Davidson's over-head kick came back off the bar late on.