NAGOYA, Japan, Sept ⁠22 (Reuters) - India secured their first gold of the Aichi-Nagoya Asian Games on Tuesday, ⁠with the women's team crushing Sri Lanka by 147 runs to retain ‌their cricket Twenty20 title in dominant fashion.

Electing to bat in a rematch of the Hangzhou final, India racked up an imposing 216-3 at the Korogi Sports Park, propelled by blistering knocks from openers Smriti ​Mandhana and Shafali Verma.

The defending champions then delivered a ⁠clinical bowling performance, bundling out Sri ⁠Lanka for 69 in under 16 overs.

"It was good to see Smriti and Shafali ⁠give ‌us a big start again, and in between all the partnerships, they were very crucial," skipper Harmanpreet Kaur said.

"Our batters have been outstanding in the last ⁠two tournaments — Asia Cup and Asian Games — and they've ​been taking responsibility and ‌giving us breakthroughs."

"We're really happy that we have opened the gate now, and ⁠hopefully we'll see ​many more golds coming up (for India)."

Mandhana (79) and Verma (48) set a fiery tempo early on, dismantling the Sri Lankan attack in a 99-run opening stand.

A mistimed reverse shot denied Verma her half-century, ⁠butMandhana continued in sublime touch. The left-hander, who became ​the first batter in women's cricket to reach 11,000 international runs, pulled and drove with authority and seemed well on course for a century.

Her 45-ball blitz finally ended when ⁠she holed out to deep backward square attempting her eighth six.

RichaGhosh provided late-innings fireworks, blasting an unbeaten 49 off just 22 balls to power India well beyond the 200-run mark.

Verma returned to trouble Sri Lanka with the ball, striking in consecutive overs with ​her off-spin to remove Imesha Dulani and Hasini Perera.

Sri Lanka's ⁠faint hopes rested on talismanic skipper Chamari Athapaththu (27), who found herself under mounting pressure following ​the early collapse.

Attempting to break the shackles,Athapaththu miscued ‌a delivery from off-spinner Deepti Sharma — a dismissal ​that effectively sealed Sri Lanka's fate.

Pakistan defeated Bangladesh by 31 runs to secure the bronze medal.

(Reporting by Amlan Chakraborty in Nagoya; editing by Ed Osmond)