Marin, cheered on by a vociferous home crowd, overcame a fighting Sun Ji Hun 13-15, 15-10, 15-9 to dash the hopes of Delhi Dashers in a gripping semifinal. She picked up two points for her win as her teams Trump player.
Earlier, another local hero B Sai Praneeth set up the victory by beating the Dashers Trump player Tian Houwei. The Hyderabadi was on song, rattling the Chinese World No. 22 with a flurry of down the line smashes.
The Hunters began on the wrong foot, with the Hyderabad duo of Pia Zebadiah Bernadet and Satwiksairaj Rankireddy capitulating in the opening clash. They lost to Ashwini Ponappa and Vladimir Ivanov 15-13, 10-15, 10-15 to silence the crowds.
Ashiwni and the tall Russian lost the first game but cam back strongly in the next two.
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India's doubles specialist Ashwini was in her elements as she ensured Delhi's comeback with her decisive returns. They took charge soon to wrap up the next two games 15-10, 15-10.
It was a close match still, with Marin losing 13-15.
The second game was tighter and gave the fans a lot to cheer as Marin lifted her game. She rolling hard and retrieved virtually every shot to frustrate the Korean.
Midway through the game, she took charge with a series of points to deflate Sun Ji 15-10.
Thereafter, it was Marin all the way. She didn't give the visibly tiring Sun Ji any opportunity and forced her into errors to capture the third game as well as the match. Two World No. 1's in action in second semi-final.
Having logged 17 points, Ahmedabad finished second in the league standings while Bengaluru were fourth with 14 points in their kitty.
This battle for a spot in the final presents a fresh challenge for both teams as neither has faced each other so far.
Women's World No. 1 Tai Tzu-ying and World No. 10 HS Prannoy are the top guns in Ahmedabad's arsenal but Bengaluru are no pushovers as they have the Mens World No. 1 Viktor Axlesen in their ranks.