West Ham United take on Arsenal in a huge clash of two struggling London clubs on Monday night.
Arsenal are on their worst run for more than 40 years and were beaten 2-1 at home by Brighton last time out.
West Ham beat Chelsea away last weekend, their first win in nine.
Antonio the difference maker for West Ham
Key to that victory was Michail Antonio, who returned to the starting line-up for the first time in three months after injury.
His workrate, determination, movement, pace and power tormented Chelsea.
But struggling £45million record signing Sebastien Haller was back in the side for the Wolves game in midweek as Antonio suffered a niggle in the victory at Stamford Bridge.
Haller was poor again as the Hammers were comfortably beaten 2-0.
Pellegrini says today is D-Day for Michail
So fans are understandably anxious to know whether Antonio will be fit to face Arsenal on Monday.
And Manuel Pellegrini says today (Saturday) is D-day for the striker ahead of the game (whufc.com).
Speaking to the press on Friday, Pellegrini said: “Michail Antonio we must continue seeing – we’ll see tomorrow if he’s fit for the game.”
Haller AND Antonio is the way forward
What West Ham fans really want to see is Antonio play up front WITH Haller.
The Hammers faithful feel Pellegrini is not getting the best out of the Frenchman playing him as a lone striker.
And statistics back up that argument with Haller netting 33 goals and 14 assists in the last two seasons playing up top with Luka Jovic at Frankfurt.
West Ham fans will just have to hope Antonio gets the all clear to start, or at least be available to come on from the bench.