Marvin Emnes scored twice as Boro hammered Grimsby’s reserve side 4-1.
Andrew Taylor and Bruno Pilatos completed Boro’s scoring.
Chris Riggott, Tony McMahon and Didier Digard fall had a run out.
BORO RESERVES: Steele; McMahon (Corker 46), Riggott, Grounds, Bennett; Emnes, Pilatos, Digard (Smallwood 46), Taylor; Franks (Martin 83), L Williams.