The final two FA Cup 2017/18 fourth round ties will take place today with live coverage on the BBC and BT Sport.
Chelsea hope to avoid two cup exits in one week when they host Newcastle United on BT Sport.
The Blues beat the Baggies 3-1 at Stamford Bridge earlier this season in the Premier League.
Newcastle are looking to reach the FA Cup fifth round for the first time since 2006
Coverage starts at 1.00pm on BT Sport 2 and BT Sport 2 HD. kick-off 1.30pm.
The second match comes from the Cardiff City Stadium as Cardiff host the current Premier League leaders Manchester City.
The Citizens last won this competition in 2011, when a 1-0 victory over Stoke City saw them lift the trophy for the fifth time in their history, and having registered a 4-1 win at home to fellow Premier League outfit Burnley in the previous round, will be looking to avoid a surprise elimination at the hands of lower league opposition.
The Bluebirds progressed to this match after beating Mansfield Town 4-1 in a third-round replay, and despite being underdogs for this fixture have a decent cup pedigree of their own, having finished as runners-up in 2008, when they lost to Portsmouth.
Coverage starts at 3.35pm on BBC One and BBC One HD. Kick-off 4.00pm.
The fifth round draw will take place during Monday’s The One Show. The Programme starts at 7pm, with the draw taking place at around 7:20pm.