Steven Mullaney’s unbeaten 63 ended Glamorgan’s winning start to the Royal London One Day Cup and propelled Nottinghamshire to the top of Group B on Wednesday night.
All-rounder Mullaney carried his bat to help the Outlaws chase down their target of 228 with nine balls and three wickets remaining at the Swalec Stadium.
The former Lancashire all-rounder reignited a stuttering Notts run-chase alongside Riki Wessels (65) after Michael Hogan's three-wicket burst had left the visitors in trouble on 11-3 and then 137-7.
Mullaney cracked three sixes and four fours and shared an unbroken 97-run partnership with Ajmal Shahzad (33 not out) for the eighth wicket.
Glamorgan had earlier set 227-8 but would have been disappointed not to have kicked on further after Jacques Rudolph's 101 at the top of the order.
The South African left-hander maintained his fine form with 10 boundaries in his 131 ball knock but lacked company at the other end.
Nottinghamshire's overseas signing James Franklin (3-32), Mullaney (2-26) and Shahzad (2-39) ran through the middle order before Andrew Salter's late cameo of 36 pushed the Dragons past 200.
Notts suffered three early blows in reply as Alex Hales, James Taylor and Samit Patel all fell to Australian seamer Hogan without scoring.
That remarkable new ball burst left the Outlaws floundering but Wessels started the fightback with a composed half-century and Mullaney finished the chase in style with a six off Hogan midway through the 49th over.