With seven minutes to go, the Hammers slashed United’s lead to just one goal after what looked like a cross from Daly looped over Earps and in.
But just as the Hammers were entertaining ideas of salvaging a point, Press found herself unmarked at the far post to net the Reds’ fourth of the game.
UNITED: Earps; A.Turner (c), McManus, M.Turner, Okvist; Zelem (Ladd 68), Toone (Staniforth 77), Groenen; Heath (Hanson 62), Galton, Russo (Press 77)
Subs not used: Ramsey, Smith, Ross, Sigsworth.
Goals: Russo (20, 42), Heath (23), Press (87)
West Ham: Arnold; Redisch Kvamme, Flaherty, Fisk, Vetterlein (Joel 73); Longhurst (Cho 60), van Egmond, Dali; Leon (Lehmann 60); Thomas (Svitkova 59), Daly
Goals: van Egmond (39), Daly (83)
Subs not used: Kiernan, Mustafa, Grant, Brosnan.
Booked: van Egmond, Daly, Dali
Referee: Ryan Atkin