|T20 Blast: Gloucestershire (2pts) beat Glamorgan by 5 runs on D/L/S method|
|Gloucestershire 150-9 (20 overs): Mustard 57; Hogan 5-17, Meschede 2-28|
|Glamorgan 32-2 (5 overs)|
Gloucestershire snatched a dramatic T20 Blast victory by five runs on the DLS method, as rain intervened at just the wrong moment for Glamorgan.
Thisara Perera bowled Jacques Rudolph with the final ball of the fifth over to leave Glamorgan on 32-2 before the downpour.
Seamer Michael Hogan claimed a career-best 5-17 to restrict Gloucestershire to 150-9.
Phil Mustard hit 57, but Craig Meschede took 2-28 before Hogan's havoc.
The target of 151 looked below par, and the match would have been tied if Perera had not struck just before the rain.
The weather continues to thwart Glamorgan's home campaign, with four previous games washed out, while fast bowler Timm van der Gugten is out of the Surrey trip with a pelvic injury.
The Welsh county are now just one point ahead of Hampshire in the Southern Group, with Gloucestershire up to fourth.
Glamorgan bowler Michael Hogan told BBC Wales Sport:
"Disappointing, you can't control the weather, we felt like we restricted them to a good total that we could get with the players we have, but unfortunately it wasn't to be.
"I was happy with the wickets, happy with the output, I felt like I controlled what I was trying to do but disappointed with the result."
Gloucestershire's Phil Mustard said:
"They (Glamorgan) knew the rain was coming but they didn't try to score too quick, they put themselves in that position and fortunately Perera bowled a very good yorker at the end."