Southern Brave 121 for 2 (Wyatt 60, Bouchier 47*) beat Manchester Originals 118 for 4 (Morris 50, Wolvaardt 46) by eight wickets
Ecclestone later went to hospital for a scan, as her England team-mate Wyatt was carrying the Brave to a seventh win in eight group fixtures.
The Brave have topped the table and now advance to play the winner of Saturday’s Eliminator between Northern Superchargers and Welsh Fire at The Kia Oval.
They shared a second-wicket partnership of 88 in 69, advancing from 7 for 1 after eight balls to underpin a total of 118 for 4.
Morris played the spinners well, eventually departing after attempting an ambitious reverse shot against a well-directed bouncer from Lauren Bell – 95 for 1 after 77.
From there, the Originals would have wanted more, but gathering singles wasn’t going to be a good enough against a strong batting line-up for the league leading Brave. South African opener Wolvaardt looked good, particularly eye-catching on the drive.
But, after an expensive start, Anya Shrubsole returned to get her and Deandra Dottin both caught in the deep as the innings lost momentum inside its last 10 balls.
While Shrubsole finished with 2 for 33 from her 20 balls, Bell and Georgia Adams were both excellent for 1 for 15 and 1 for 19 respectively.
The Brave started their reply knowing they needed to reach 112 to stay ahead of the Northern Superchargers and qualify directly for the final even with a defeat.
Indian Smriti Mandhana was run out by a direct hit from Amanda-Jade Wellington early in the Brave chase – 15 for 1 after 13 balls – but that was the only blip.
From there, it was smooth-sailing for the league-leaders, who are chasing their first title after two previous final defeats to Oval Invincibles.
Wyatt and Bouchier were both strong down the ground, though the former did reach her fifty off 28 balls with a swept six off Emma Lamb, who she had hit for three fours moments earlier.
By that time, it was game over at 97 for 1 after 50 balls. Wyatt was bowled by Kathryn Bryce but it was too little too late. Southern Brave won by eight wickets and will be straight into the final at Lord’s this Sunday.
Ciara Fearn is a Hundred Rising Reporters. The ECB and Cricket Writers’ Club have partnered to provide young and aspiring journalists with the opportunity to report on The Hundred matches as part of The Hundred Rising programme this summer.