After Leigh Halfpenny made the first glaring error of his fledgling wing career, dropping a clearance while under no pressure, makeshift fly-half Benoit Baby singled him out for special attention.
At the other end Gael Givet then made a vital clearance from Brett Ormerod's dangerous left-wing cross with Gary Taylor-Fletcher poised to strike at the far post.
Phil Jagielka's deep right-wing cross had Macho backtracking, forcing Stanislav Varga into a panicky, overhead clearance under pressure from Wayne Allison.