Frew's 4-16 leads Cornwall Warriors past Middlesex United Stars in Dream11 Jamaica T10
Asking the Stars to bat first after winning the toss, the Warriors had early success after removing West Indies opener John Campbell for 14.
Sashane Anderson (22) and Suwayne Wilson (12) were the only other Stars batsmen to reach double figures as Frew, a member of the West Indies U-19 World Cup winning squad in 2016, ripped through the batting line-up to finish with figures of 4-16 from his two overs.
In the end, the Stars were restricted to a modest 81-7 off their 10 overs.
The Warriors made light work of the chase, reaching 83-3 off 8.4 overs to get their second win of the competition.
They got home thanks to some indiscipline from the Stars bowlers and solid showings from Ockeeno Farqharson (21), Jevoy Spence (15) and Andre McCarthy (13 not out).
West Indies U-19 representative Andel Gordon took 2-11 off his two overs.