The 16-year-old from Haryana got a bye in the quarterfinals and then defeated Germany's Gonzalez Podbicanin A 9 & 8 in the semifinals to set up a final clash with Yost Kaylin, who plays in the Ladies Professional golf tour of America, for the gold medal.
Diksha had broken a field record in the first round with two-under 68 and carded 71 in the second round to total one- under 139, while Kaylin (73, 69) totalled two-over 142.
In the back nine, Kaylin was one up after firing a long birdie putt on the 13th. However, Diksha too bounced back with three birdies and was one up on the 17th green. The experienced American then dropped a 16-footer birdie putt to level the score.
In the play-off, Kaylin emerged winner to clinch the gold, while Diksha settled for the silver.
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"It seems it was not my day. I gave everything but luck was not on my side but I'm happy that I could win the silver," said Diksha.
"My opponent told me that 'no one can stop you from playing on LPGA, you have a fantastic game for any age'. It means a lot. I hope to keep working hard and do well for my country," she added.
Diksha and her elder brother Yogesh, who also participated in the event but failed to qualify, are children of Col Narinder Dagar. They both picked up the sports at an early age while accompanying their father to the golf course.
Of the eight tournaments she has participated in at the domestic level, she has won four and finished runner-up in two. She has also taken part in four international meets, including the World Ladies Amateur Golf Championship.
Her achievements last year helped her earn a place in the national team for the Usha All India Amateur Golf Championship, which turns 100. She is the only Indian golfer (U-18) to be ranked in the top 500 at global level.
This is the first time golf is a part of Deaflympics.
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