West Indies star Stafanie Taylor belted the first century in Regional Women's Twenty20 cricket history as Jamaica destroyed cellar team Dominica by 172 runs yesterday at Chedwin Park, St Catherine to stay joint top in the preliminary phase.

Taylor, who opened the innings, carved 14 boundaries and hammered one six in her unbeaten 114 off 67 deliveries in Jamaica's tournament-high total of 201-3 off 20 overs.

Medium-pacer Roshana Outar then took a remarkable four wickets without conceding a run to help dismiss Dominica for an embarrassing 29 all out.

Scores: Jamaica 201-3 (20 overs); Dominica 29 (16.2 overs).

Batting first, Jamaica lost opener Jodiann Morgan cheaply, but Taylor and left-hander Shanel Daley (39) added a quickfire 107-run second-wicket partnership to set the foundation for a big total.

After Daley's dismissal, Taylor was joined by Natasha McLean, who chipped in with 16 off 13 balls in the third wicket stand of 70 runs, as the Jamaicans continued to flay the Dominican bowlers to all corners of the Chedwin Park ground.

In reply, Outar (4-0) and Vanessa Watts (3-6) cut through the meek Dominica batting to complete the resounding win. Chedean Nation and Alecia Booklal also took one wicket a-piece.

Taylor told the Jamaica Observer that while pleased with being the first women to reach the three-figure landmark in the Regional T20, she was determined to improve the Jamaica's net run-rate fight for a place in the final.

"I'm pretty happy, not just with my performance but also with the team, because that score of 200 helped to boost our net run-rate. I'm pleased with the knock. I decided to loosen a little bit and bat aggressively to improve our run rate.

"It was always important to score heavily today against Dominica and I'm happy we actually did that to improve our chances," she said.

In this, the inaugural West Indies Cricket Board (WICB) Women's T20 Tournament, each team is scheduled to play seven matches in the preliminary round before the third-place play-off and the final is contested on Saturday at Sabina Park.

In the afternoon clash at the Chedwin Park, the Barbados team remains neck and neck with Jamaica after thrashing St Lucia by 134 runs.

Prolific opener Kycia Knight was the star of the show, blazing a 67-ball 93 in Barbados' 179-3.

Scores: Barbados 179-3 (20 overs); St Lucia 45 (17.4 overs)

At Kensington Park in east Kingston, Trinidad & Tobago romped to a 117-run victory over Grenada to set to set up a three-way tie with Jamaica and Barbados at the top of the standings.

Scores: Trinidad & Tobago 181-4 (20 overs); Grenada 64-8 (20 overs)

In the second match of the double-header at Kensington, Guyana squeezed out a final-ball three wicket victory over St Vincent and the Grenadines.

Scores: St Vincent and the Grenadines 87 (19.2 overs); Guyana 90-7 (20 overs)

The competition takes a break today before the final round of preliminary matches are played tomorrow.

T&T face Dominica and the Barbados team challenges St Vincent and the Grenadines at Kensington Park, while Guyana battle St Lucia and Jamaica entertain Grenada at Chedwin Park.