A calamitous Jake Livermore own goal had given the hosts a first-half lead but Albion couldn't find a second and were punished late on by Grant's first goal for the Baggies. Scroll down and click through to see who shone and who struggled for Graham Potter's men, who are still searching for their first home win of the season.
13. Alexis Mac Allister - 5
A few nice touches but, like Groß, was unable to impact the game in Brighton's favour and repeat his heroics at Crystal Palace (Photo by Glyn Kirk - Pool/Getty Images)
14. Steven Alzate - 5/10
Didn't see much of the ball after being brought on in a period, when West Brom were seeing most of the ball. Was unable to prevent equaliser (Photo by Richard Heathcote/Getty Images)