Not sure why so many people think Walker was MOTM. He did well defensively, but that didn't amount to much due to Brighton's bus-parking, and I wasn't especially impressed with him going forward. There were a number of times that he played the ball inside and then didn't make the run behind the full-back for the return pass, even though the other player (KDB, Silva) was looking for it. Don't remember his crossing being any better than we got from Navas, and he was regularly slagged off for it.
I was watching the game in a bar with no sound on, so I can only assume the commentator and/or pundits may have talked up Walker and influenced people's opinions. I'd have given MOTM to Silva or KDB personally.