Gime Toure forced McMillan into a good save after Wright powered his way past two Warrington defenders to send over a cross, while the French trialist
could only stab into the arms of McMillan as he raced onto Mark Carrington's long clearance.
Sub Ryan Bowman slotted home the second five minutes from time after taking the ball round Livi's trialist
keeper Graeme Smith.
Asked about the trialists
after the game, Beardsley said: "We had one trialist
against Darlo, but it's very hard for them.
FIRST HALF: Weaver, Bernard, Maxwell, Trialist
, Harding, Adams (O'Neill, 38), Cooper, Brown, McFarlane, Storer, Trialist
After taking a little time to get into their stride and going two goals down to strikes by Tyrone Barnett on 19 minutes and Liam McAlinden on 25 minutes, Tranmere deservedly pulled one back on 49 minutes The scorer, unnamed trialist
number seven, was worth his goal, after making a positive contribution in a wide right role.
Coventry City Under-21s: Charles-Cook, Trialist
, Lawton, Finch, Haynes, Trialist
(Dev Kelly-Evans 78), Bangura, Turgott, G Thomas (Harries 55), Trialist
(Spence 69), Trialist
Lee Stevenson opened the scoring after 26 for Andy Todd's Stags outfit before trialist
Michael Boateng and Andy Owens added late goals to ensure the win.
QPR manager Neil Warnock insists any move for trialist
Danny Gabbidon is at an early stage.
But 19-year-old French trialist
Enzo Fuentes thumped home a stunning 20-yard winner for the Irish side.
A decision has yet to be made about another trialist
, Nancy rightback Jean Calve.
goalkeeper Paul Gerrard has recovered from the groin injury which has kept him out since pre-season and lines up alongside fellow trialist
, right-back Jamie Smith, a 22-year-old former Liverpool and Stockport player.
SUNDERLAND (4-4-1-1): Carson; Anderson, M'voto, Trialist
, Harte, J Richardson, Donoghue, Trialist
, Fortune, Chandler, Dowson.