Robbie Stevenson converted a 23rd minute penalty for Sphinx but the Hereford based side scored twice through Tom Sparey in the 55th minute and Sam Harrison five minutes later, to snatch the victory.
Westfields: Moore, Aldrich, Edwards, Sparey, Glover, Robbins, Jones, Harrison, Addis, McDonald, Morgan. Subs: Hibbard, Pugh, Warder, Harris, Kear
Sphinx: Holland, Knibbs, Kimberlin, McAteer. T.Cudworth. Donaldson (Phillips 60), Gaggini (Eggleton 77), Husserbury, Stevenson, Hopkins SNU McSheffrey
The sides meet again in a league match at Sphinx Drive on Saturday.