Postpublished at 16:53 Greenwich Mean Time 21 January 2017
That defeat, coupled with Swansea's earlier win, puts Sunderland bottom of the league.
West Brom stay eighth on 32 points.
Summary
Fletcher's volley gives West Brom the lead
Brunt's stunning strike doubles West Brom's lead
New signing Livermore starts on bench for West Brom
Sunderland start game bottom of Premier League
Postpublished at 16:53 Greenwich Mean Time 21 January 2017
FULL-TIMEpublished at 16:52 Greenwich Mean Time 21 January 2017
West Brom 2-0 Sunderland
Hal Robson-Kanu almost flicks in James McClean's cross, but that's that.
Postpublished at 92 mins
West Brom 2-0 Sunderland
John O'Shea wraps his leg around Hal Robson-Kanu and concedes a free-kick.
Matt Phillips tries to curl the ball around the wall but doesn't quite manage it.
Postpublished at 91 mins
West Brom 2-0 Sunderland
We're into the first of five added minutes.
SUBSTITUTIONpublished at 88 mins
West Brom 2-0 Sunderland
Somewhere in all of that Rondon makes way for Robson-Kanu.
YELLOW CARDpublished at 85 mins
West Brom 2-0 Sunderland
Sunderland have a free-kick but it comes to nothing and Matt Phillips breaks, before he is taken out by George Honeyman.
Free-kick to West Brom now, Phillips with the cross but it is put behind by Jack Rodwell.
Darren Fletcher seems to be telling referee Craig Pawson he was elbowed in the face - the Scot is not happy.
Looking at the replays Papy Djilobodji has punched him and should have seen red.
Postpublished at 83 mins
West Brom 2-0 Sunderland
Jake Livermore could have opened his West Brom account.
James McClean puts in an inviting cross for his new team-mate but the former Hull man doesn't connect properly as he arrives in the box.
Postpublished at 81 mins
West Brom 2-0 Sunderland
Another substitution.
James McClean replaces Nacer Chadli.
Postpublished at 78 mins
West Brom 2-0 Sunderland
Jason Denayer's day is over as he hobbles off and Fabio Borini is on for Sunderland.
Image source, ReutersPostpublished at 76 mins
West Brom 2-0 Sunderland
The corner was not worth the wait.
Jason Denayer is still off the pitch as West Brom counter.
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End of twitter postPostpublished at 74 mins
West Brom 2-0 Sunderland
Corner to Sunderland.
Claudio Yacob has taken two Sunderland players out, first Victor Anichebe loses out in the tackle to the midfielder enforcer and then the Argentinian smashes the ball at Jason Denayer's nether regions.
Ouch.
After all that, Patrick van Aanholt's shot takes a deflection and almost loops into the top corner, but Ben Foster tips it behind.
Still waiting on the corner, Denayer can hardly walk.
SUBSTITUTIONpublished at 16:28 Greenwich Mean Time 21 January 2017
West Brom 2-0 Sunderland
James Morrison is off, Jake Livermore is on.
Image source, ReutersPostpublished at 71 mins
West Brom 2-0 Sunderland
Billy Jones gets a free header in the West Brom box but its into the ground and Ben Foster collects.
Postpublished at 16:26 Greenwich Mean Time 21 January 2017
West Brom 2-0 Sunderland
Jake Livermore is about to make his West Brom debut after his £10m move from Hull this week.
Image source, Reuters66 minspublished at 16:23 Greenwich Mean Time 21 January 2017
West Brom 2-0 Sunderland
And here is the change, Adnan Januzaj off, Victor Anichebe on.
The Nigerian scored nine goals in 63 games for West Brom.
Postpublished at 16:21 Greenwich Mean Time 21 January 2017
West Brom 2-0 Sunderland
Victor Anichebe looks to be coming on against his former club.
Postpublished at 63 mins
West Brom 2-0 Sunderland
Sunderland are having a go but they still haven't registered a shot on target in this half.
Jermain Defoe claims James Morrison has fouled him in the box as they both jump for the ball, but quite correctly nothing is given.
Postpublished at 59 mins
West Brom 2-0 Sunderland
Jermain Defoe spins out of tackle by James Morrison and wins another free-kick.
Good spell here by Sunderland.
Larsson and Van Aanholt stand over the ball.
The ball is played to Jermain Defoe who has a shot from distance, it deflects off Matt Phillips for a corner, but that comes to nothing.
Postpublished at 54 mins
West Brom 2-0 Sunderland
Claudio Yacob fouls Adnan Januzaj on the edge of the area.
Big opportunity for Sunderland.
Three standing over the ball and it's Patrick van Aanholt who takes it, but it hits the wall.
He throws his boot at the rebound but it goes over.
Chance gone.
Postpublished at 52 mins
West Brom 2-0 Sunderland
Jack Rodwell has a blast from long range, it's not bad but it is not troubling Ben Foster in the West Brom goal.