Arsenal were denied all three points by a contentious late penalty from Jay Rodriguez as the spoils were shared at The Hawthorns.
Alexis Sanchez's deflected free-kick had given the visitors the lead but controversy struck when referee Mike Dean awarded a penalty for a hand ball, allowing West Brom to equalise from the spot.
Here, Sportsmail brings you a round-up of all the things you may have missed from the Sunday evening tie.
Cheer up Sanchez, January is almost here
At times the Chile international's facial expressions can be ambiguous, but there is no denying that Sanchez looked entirely fed up on Sunday.