Goals from Patrick Bamford and Britt Assombalonga fired Boro to a 2-0 win at Spennymoor Town.
The goals came in either half as Tony Pulis’ squad picked up their first win of the summer after a good work-out against the National League North side.
It took Boro just two minutes to open the goals-scored account on UK soil after Bamford converted from the penalty spot.
Even before Matthew Gould, son of Boro goalkeeping coach Jonathan, had brought down Paddy McNair for the penalty, Adama Traore had already forced a save from the Spennymoor goalkeeper with a low drive.
McNair also had a shot deflected wide during the opening exchanges, but there was little in the way of entertainment for the 708 at Brewery Field until the period leading up to half-time when Boro threatened again.
Adama forced another save from Gould after carrying the ball some 60 yards up the hill before Bamford hooked an effort wide after a good ball from Ben Gibson.
And moments before half-time, McNair showed great skill to to control and turn before volleying wide of the mark.
The home side had no chances of any note, but Boro were called upon defensively and Gibson, playing at left-back, and Ryan Shotton were both called upon to make some timely clearances.
Half-time saw a handful of changes with Marvin Johnson replacing Gibson at left-back, Britt Assombalonga coming on for Rudy Gestede down the middle, and Ashley Fletcher taking over from Bamford.
Darren Randolph was called into action for the first time early in the second half when he saved from Glen Taylor who got up well to head at goal.
Moments later, Aden Flint headed an Adama corner wide before more changes saw a re-shuffle that saw McNair move to right-back, Dael Fry into the holding role, and roles in the midfield for Julien de Sart and Lewis Wing, alongside Grant Leadbitter.
Boro worked a decent opening on 63 minutes when Fry picked out an intelligent run from Fletcher, but the striker’s effort was just wide.
A second goal did come moments later, though, and Fletcher was the provider with a lovely ball to release Assombalonga, who duly finished off at the second attempt after good work by the home goalkeeper.
There were a couple of further half chances for Boro to add to the tally, and Fletcher was denied what would have been a deserved goal late on when the keeper saved at his feet.
Boro: Randolph (Konstantopoulos 55); Shotton, Flint, Fry, Gibson (Johnson 46); McNair, Clayton (Leadbitter 55), Howson (de Sart 55); Traore (Wing 55), Gestede (Assombalonga 46), Bamford (Fletcher 46).
Spennymoor: Gould (Trialist 86); Brogan (Trialist 70), Thackray (Trialist 46), Atkinson, Williams (Hall 46); Chandler; Ramshaw, Hibbs, Henry (Foley 46), Johnson (Curtis 46); Taylor (Trialist 70).