Stubbs and Marcus Stoinis had been instrumental in pulling off the chase as they shared a 70-run stand for the fourth wicket.
Aussie all-rounder Stoinis whacked 4 fours and three sixes to make 46 off 25 balls earlier than he miscued a full toss from Ben Sanderson within the penultimate set and was caught.
Nonetheless, with eight wanted off the ultimate 5 balls, bowled by Lewis Gregory, Stubbs and Nikhil Chaudhary received Courageous over the road.
Stubbs sealed the win by whacking Gregory over sq. leg for six as he completed unbeaten on 52 from 28 balls, having additionally struck 4 fours and three sixes at a strike price of 185.71.
The Rockets had earlier posted what regarded a aggressive whole with the highest order all chipping in with helpful contributions.
Mitchell Santner top-scored with an unbeaten 35 off 23 balls as he shared an unbroken sixth-wicket stand with Gregory (28 not out off 18 balls) price 66 runs.
The wickets had been shared between 5 bowlers, with Courageous skipper Chris Jordan curbing Finn Allen’s attacking innings on 23 with an excellent yorker.
It was a chastening day for 17-year-old fast bowler Manny Lumsden, although, as his first set disappeared for 19 runs and he was not known as upon once more.
