Harrow head into Saturday's tough Ryman Premier opener at Dover Athletic in good heart after a spirited 3-2 win over a Queens Park Rangers XI at Earlsmead last night (Wednesday).
Early first half goals from Jonathan Constant and Darren Grieves put the hosts in the driving seat before a mix up between defender Danny Leech and new goalkeeper Andre Baptiste allowed QPR's Chris Flood to half the deficit before the break.
Boro boss David Howell fielded an entirely different team after the interval but had to wait until the 75th minute for Ismael Ehui to restore the two goal cushion.
However, the Championship club's baby-faced side refused to buckle and grabbed another through Antonio German before wasted a glorious chance late on to earn a share of the spoils their second half domination deserved.
Harrow started the game brightly and, after seeing two earlier efforts deflected and sail high over the bar, Constant finally got his reward, blasting through a crowd of players from 12 yards after 13 minutes.
Barely five minutes later Harrow doubled their lead with QPR's defence at sixes and sevens. After the visitors failed to deal with a corner a goal-mouth scramble ensued and the burly Grieves was in the right place to stab the ball past Reece Crowther.
Despite a heavy downpour the pitch did not cut up, allowing the game to continue at full throttle. Grieves then headed a good chance over from Lee Hall's corner before Harrow shot themselves in the foot.
Joe Oastler whipped in a low cross into the box from the nearside and instead of Baptiste claiming an easy catch the leggy shot stopper collided with defender Leech, allowing Flood the easiest goal he is ever likely to score.
Rangers were now in the ascendancy and should have restored parity after several superb one touch passes put Lee Brown into space but the defender blazed over from 10 yards.
Leech, who was too casual for his own good on several occasions as Rangers threatened, then tried to play off-side but to no avail. Rangers' West Ham Academy graduate Hogan Ephraim bore down on goal but Leech somehow made up ground and timed his tackle to perfection just as the 20-year-old was about to pull the trigger.
First teamer Ephraim was left in a heap by the tackle and forced off, however, prompted watching QPR boss Iain Dowie to leave his seat in the stands and assess the damage pitch-side.
When play resumed Constant saw a close range shot saved while Baptiste denied Chris Arthur at the other end.
The second half, particularly with so many changes in Boro personnel, was less eventful with chances for both sides at a premium.
Rangers, probably with a blast from Dowie and coach Gareth Ainsworth still ringing in their ears, enjoyed more control of proceedings and were a lot more composed on the ball that Howell's new-look side, who were forced into hurried passes.
However, it was the hosts who extended their lead when Ehui picked his spot after the Rangers defence afforded him too much room on the edge of the box.
QPR substitute German was twice denied by Boro keeper Gary Ross but made no mistake at the third time of asking with a blurring drive from distance to give the score-line an air of respectability.