Birmingham 135 for 9 (Davies 42, Hain 38*, Singh 3-18, Dwarshuis 3-32) beat Worcestershire 134 (Mousley 4-19) by one wicket
Birmingham took the local derby honours against Worcestershire Rapids with a thrilling one-wicket Vitality Blast victory in a low-scoring nerve-shredder at Edgbaston.
The Rapids, put in, floundered to 134 all out in 18.4 overs in the face of the experienced Bears spin attack.
Dan Mousley took a T20 best 4 for 19, Danny Briggs 2 for 20 and Jake Lintott 2 for 27 as no batter reached 30.
Warwickshire then scraped to 135 for 9 with three balls to spare.
Alex Davies supplied a violent start and, after Fateh Singh (3 for 18) and Ben Dwarshuis (3 for 32), forced a collapse, last pair Sam Hain (38 not out) and Lintott took the Bears over the line.
The Rapids charged to 39 from 21 balls before Mousley struck twice in three balls. Seventeen-year-old Isaac Mohammed, a product of the Edgbaston youth system before joining Worcestershire earlier this year, showed his class with a glorious six over long-off off Ed Barnard but then missed a full toss and was bowled. Jake Libby, off-balance, sliced to extra cover and it was three wickets for four runs from ten balls after Kashif Ali made a porridge of a pull at Briggs and was bowled.
Adam Hose struck four fours to restore some momentum but his demise accelerated the collapse. Hose chipped Mousley to deep midwicket, Gareth Roderick swept Lintott's first ball into the gloves of wicketkeeper Davies and Ethan Brookes drove Briggs to extra cover to supply the bowler's 300th wicket in all T20 competitions across the world.
Mousley's fourth scalp arrived when Tom Taylor slogged to long-on. Dwarshuis socked Lintott for three successive sixes but, after the sequence was broken by a shrewd off-side wide, hoisted the next ball to long -off.
Eight wickets having fallen in 12 overs, the Rapids' last two wickets found themselves with 26 balls at their disposal. They gathered 15 runs before Jacob Duffy holed out to Barnard to cap the catalogue of carelessness that was the Rapids' innings.
Birmingham soon lost Tom Latham, who skied a slog at Dwarshuis, but were put on course for victory by Davies' cameo. The captain hit 34 of his 42 runs in fours and sixes before lifting Singh's first ball to Taylor at long-off.
The Bears then emulated the Rapids' collapse. Taylor took another calm catch in the same position when Mousley attacked Duffy. Warwickshire were still well in control, needing only six per over, but Moeen Ali and Barnard tried to go big and only sent up catches. When Barnard and Kai Smith, pinned lbw, fell to successive balls from Singh, the home side were 86 for 6.
The Rapids were on a roll but Hain and George Garton applied some belated intelligence to the batting to add 25 in five overs before the latter was brilliantly caught at point by Mohammed off Duffy. With 21 needed from three overs, the Bears were leaning, as so often, on Hain.
Hasan Ali slogged six and glanced four from successive balls in the penultimate over from Dwarshuis to take his side within three of victory. The Pakistan star then skied to deep extra cover but the Bears needed three from the last over, with Hain on strike - and the Bears' talisman, with mature support from Lintott, saw his side home.