AIG Women's Open: Aditi Ashok to play alongside American Brittany Altomare and Korea's Sung Hyun Park
The 23-year-old Ashok, who missed an Olympic medal by a whisker, has played the most Majors by an Indian men or women.
The tour said the move was made upon the advice of the government due to ongoing Covid-19 health concerns and travel and border restrictions.
The 26-year-old Castren, who started the day two shots back, finished at 14-under 274 at the Lake Merced Golf Club in San Francisco.
Los Angeles Open: Brooke Henderson rides on late surge to pip Jessica Korda and claim 10th LPGA title
Canada's Henderson, 23 and ranked sixth in the world, finished with a 16-under par total of 268 to claim her 10th LPGA title and her first since the 2019 Meijer LPGA Classic in Michigan.
The LPGA was hard-hit by the pandemic, losing events on its Asian swing last February weeks before other sports including tennis and the major US sports leagues, were forced to shut down operations.
The LPGA Tour was last played on 16 February when Inbee Park won the Women's Australian Open. Three tournaments in Asia were halted, and then the COVID-19 pandemic shut down sports.
Ryder Cup officials postponed the September matches until next year due to the COVID-19 pandemic that made it increasingly unlikely the loudest event in golf could have spectators.
Coronavirus Pandemic: LPGA Tour loses its first major to COVID-19 with cancellation of Evian Championship
The LPGA Tour lost its first major because of the COVID-19 pandemic when it announced Tuesday the Evian Championship in France has been canceled this year.
Indian golfer Aditi Ashok hails LPGA's decision to let players keep their Tour cards for next season
Aditi, whose last event was the New South Wales Open in Australia where she was Tied-4th, tried to get to the US before the coronavirus-forced lockdown came into effect.
Coronavirus Outbreak: LPGA eyes getting season underway from July despite extended lockdowns, travel restrictions
The Ladies Professional Golf Association (LPGA) is hoping to get the 2020 season under way with the Dow Great Lakes Bay Invitational from 15-18 July, the start of what will be a busy second half of the year.
Coronavirus pandemic: Australian Grand Prix cancelled, ODIs to be played in empty stadiums, Australian sports feel impact of virus outbreak
Cricket Australia chief executive Kevin Roberts said the decision to play games without any spectators was common sense 'in the face of an unprecedented public health issue'
Year in review 2018: From Shubhankar Sharma's win at Maybank Championship to return of Rahil Gangjee, top moments in Indian golf
From Shubhankar Sharma’s final round 62 to win Maybank Championship to the return of Gangjee here are some of the highlights of Indian golf in 2018
Aditi Ashok, playing her second season on the LPGA, was making her first start since missing one in Australia at the beginning of the year.
Australian Ladies Classic Golf Tournament: India's Sharmila Nicollet off to strong start, finishes joint-fourth after first round
Sharmila was tied fourth alongside French golfer, Celine Boutier, Chinas Lin Xiu Yu, Australias Stephanie Na, Dane Nanna Madsen, Mexican Ana Menedez, German Olivia Cowan and Australian Hannah Green. They all shot 70.
Shubhankar Sharma's soaring career graph is proof of the success of indigenous training in Indian golf
Shubhankar's career graph continues to soar and on Tuesday he checked in at No 72 in the official world golf rankings, thereby narrowly overtaking his senior country-mate and PGA Tour member Anirban Lahiri who sits at No 76.
Indian golfer Aditi Ashok will play her fourth successive Major of the year when she tees up at the Women's British Open.
Aditi Ashok became a household name after her surprising performance at Rio Olympics. She has followed that up by a strong year, and has been rising from strength to strength.
Leading Indian golfer Aditi Ashok secured a career-best tied 25th finish in LPGA's Walmart NW Arkansas Championship. Aditi totalled eight-under 208 with rounds of 70, 64 and 71.
Aditi's best on the LPGA Tour had been tied 32 at Meijer LPGA Classic last week and she has made five cuts in seven starts, including one Major, the ANA Inspiration.
Aditi Ashok scripted another piece of history in her fast-rising career by clinching partial playing rights on the LPGA Tour with a tied 24th finish in the Qualifying Tournament.