The Wanderers’ keeper also denied Michael Smith before the break as the Championship outfit enjoyed their best spell.
But the Whites had openings of their own alongside the two goals, with Cozier-Duberry testing Daniel Iversen early on and Josh Dacres-Cogley – enjoying another impressive afternoon – glancing a Josh Sheehan free-kick over the bar before Schumacher’s men, still needing a striker to finish off some of their best work, delivered their double blow to head into the real thing in fine fettle.
Wanderers: Sharman-Lowe; Dacres-Cogley (Osei-Tutu 71), Toal (Forino 71), Johnston, Conway (Inwood 80); Morley (Simons 71), Sheehan (Sharples-Ahmed 85); Cozier-Duberry (Schön 80), McAtee (Abimbola 85), Mendes Gomes Gale 71); Lawrence (Randall 71).
Booked: Sheehan
Preston: Iversen; Offiah (Storey 69), Gibson, Hughes, Brady (Vukcevic 62); Small, Potts (McCann 62), Whiteman, Frøkjær (Thordarson 62); Osmajic, Smith (Jebbison HT).
Booked: Frøkjær, Jebberson
Referee: Mather
Attendance: 8,115 (1,931 Preston)