Form guidepublished at 19:15 BST 15 July 2017
Glamorgan have won one and lost one so far, losing their opener to Hampshire and then winning against Sussex.
Somerset, however, have lost both their opening Blast matches to Surrey and Essex.
BBC Radio 5 live sports extra and BBC local radio commentary
Rain delay with Glamorgan at 171-5
Play started at 19:35 due to rain delay
Watch in-play highlights clips
Glamorgan have won one and lost one so far, losing their opener to Hampshire and then winning against Sussex.
Somerset, however, have lost both their opening Blast matches to Surrey and Essex.
No sign of the drizzle clearing yet but we don’t start losing overs until 19.35 so there's still hope.
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Hello and welcome to our live coverage of tonight's T20 Blast fixture as Glamorgan host Somerset. Unfortunately the toss has been delayed due to rain.
We'll be bringing you in-play clips, if play starts, and you can also listen to coverage on BBC Radio 5 live sports extra.
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