Mark Hughes has regretted a slow start that left his Queens Park Rangers side with too much to do at The Hawthorns.
The bottom-of-the-table London outfit were two goals behind after James Morrison and Zoltan Gera put West Brom ahead early in the first half, before Adel Taarabt pulled one back before half time.
A spirited display from QPR after the break looked to have been snuffed out when Youssuf Mulumbu restored the home side's two-goal lead, but Esteban Granero offered hope on 90 minutes.
Jose Bosingwa wasted a great chance to rescue a point with the last kick of the match, leaving Rangers short of their first win of the league campaign.
"In the early part of the game we are giving ourselves too much to do at the moment," Hughes told Sky Sports.
"We talk about the fundamentals of defending, stopping things at source and if the ball does come in, you make sure you get on the end of it.
"We didn't do that in that early part of the game, really because we didn't start correctly and were not as dynamic as I like to see us start games. As a consequence we got picked off in wider areas, they produced quality balls and we did not deal with it."
Taarabt scored in a losing cause for the second consecutive game, but aspects of QPR's display did please Hughes.
He added: "Two-nil down away, it's nigh-on impossible to get back but credit to us for getting back with a great goal from Adel Taarabt, who I thought was excellent.
"We needed to address a few things and I thought we were much better in the second half, engaging people better, getting on the front foot and getting in front of people. For the vast majority of the game I thought we were in control of it."