West Bromwich Albion top scorer Brandon Thomas-Asante hit the only goal of the game as Carlos Corberan's promotion-chasing Baggies beat Norwich to win for only the second time in six games.
The Baggies were aided by playing with an extra man for more than an hour after a mad three minutes, in which Norwich midfielder Borja Sainz was first yellow-carded, then sent off.
First, on the half hour, he was booked for a challenge on Grady Diangana and then, after having an effort denied by Albion keeper Alex Palmer, on 33 minutes, he waved an imaginary yellow card of his own towards referee James Bell.