Arsene Wenger's Gunners sit five points off fourth-placed Liverpool with two games in hand, and must pick up wins to keep up the pressure for Champions League qualification.
That will be easier said than done as they face a resilient West Brom team at The Hawthorns, with Tony Pulis' men sitting eighth following an impressive campaign.
The Baggies have lost their last two league games without scoring a goal, but Wenger will certainly not be execting an easy ride in Saturday's lunchtime kick-off.
Scroll down for Standard Sport's comprehensive preview....
West Brom host Arsenal with kick-off scheduled for 12:30pm on Saturday, March 18.
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Alex Oxlade-Chamberlain faces a fitness test after being forced off in the 5-0 FA Cup quarter-final win over Lincoln last weekend with a hamstring problem, but it was more of a precaution and he could be involved at The Hawthorns.
Danny Welbeck and Alex Iwobi have overcome illness but Kieran Gibbs is a doubt with an unspecified knock, while Mohamed Elneny (ankle) and Santi Cazorla (Achilles) are out.
Provisional squad: Cech, Ospina, Martinez, Bellerin, Holding, Gabriel, Mertesacker, Koscielny, Mustafi, Monreal, Gibbs, Maitland-Niles, Coquelin, Xhaka, Ramsey, Oxlade-Chamberlain, Ozil, Walcott, Reine-Adelaide, Iwobi, Perez, Sanchez, Giroud, Welbeck.
Matt Phillips is out as he continues to struggle with a hamstring injury.
The winger has missed the last three games with the problem and will be joined on the sidelines by James Morrison who is nursing an ankle knock.
Salomon Rondon could be recalled to the starting line-up after the striker, who is on a 13-game run without a goal, was a second-half substitute in last Saturday's 3-0 defeat to Everton.
Provisional squad: Foster, Myhill, Dawson, Nyom, McAuley, Kane Wilson, Marc Wilson, Olsson, Evans, Galloway, Brunt, Fletcher, Field, Yacob, McClean, Chadli, Rondon, Robson-Kanu, Leko.
West Brom starting XI: Foster, Dawson, McAuley, Evans, Nyom, Livermore, Yacob, Fletcher, Chadli, Rondon, McClean
Arsenal starting XI: Cech; Bellerin, Mustafi, Koscielny, Monreal; Xhaka, Ramsey; Walcott, Ozil, Sanchez; Welbeck
BETTING ODDS (via 888 Sport)
West Brom to win: 4/1
Arsenal to win: 7/10
Click here to place a bet. Odds correct as of March 17 at 1pm.