Joshna beat second seed Dipika Pallikal in the women's final while Ghosal downed Maharashtra's Siddharth Suchde in the men's.
The top seeded Indian will meet Delia Arnold of Malaysia next in the Asian Junior squash tournament.
Top seeds Ritwik Bhattacharya and Joshna Chinappa won the the men's and women's Open titles respectively in the 64th CCI-Western India Open Squash Championships on Sunday. The formidable Bhattacharya scored a 9-7, 9-1, 9-2 triumph over second seed Sandeep Jangra while Chinappa overcame England's Mandy Kennedy 9-5, 9-5, 9-2 in the women's final.
Joshna Chinappa pulled off a huge upset when she beat second seed Sharon Wee to reach the final of the NSC Tour 1 squash tournament in Kuala Lumpur on Tuesday. The sixth seeded Indian No 1 fought gamely for 50 minutes to carve out a 9-6, 3-9, 1-9, 9-7, 9-2 victory over her illustrious Malaysian opponent.
India's Joshna Chinappa won the British Open Junior championship when she Tenille Swartaz 3-9, 9-3 9-6, 9-3.
Fifth seed Joshna Chinappa lost to fourth seed Mauela Manetta of Italy in the quarterfinals to crash out of the Betteridge and Breitliong San Diego Classic squash tournament.
Saurav Ghosal and Siddharth Suchde were the only Indians left in the men's singles event after two of their compatriots, including former national champion Ritwik Bhattacharya, crashed out in the second round of the Asian Squash Championships in Kuwait.
The Indian ace went down to third seed Raneem El Weleily of Egypt in the quarter-finals of the Los Angeles Open.
Talented Joshna Chinappa put paid to the aspirations of compatriot Dipika Pallikal, scoring a thrilling 3-2 win over the highly-ranked Indian in the semi-finals of the WISPA Challenger Squash championship in Chennai on Friday. World number 32 Joshna beat the 23rd-ranked Pallikal 6-11, 11-9, 11-6, 6-11, 11-6 in a marathon 60-minute game.
The Indian ace will take on second seeded Raneem El Weleily of Egypt in the title match.
Squash Racquet Federation of India (SRFI) secretary Cyrus Poncha said that he does not see any tournament being conducted before September.
The country's leading players will be in action in the CCI-Western India Open squash tournament, in Mumbai from November 21 to 27.
Delhi's Gaurav Nandrajog clinched the men's title after top seed Ritwik Bhattacharya conceded the final because of a knee injury.
India's challenge in the squash team event at the Commonwealth Games came to an end after the fourth seeded pair of National champions Saurav Ghosal and Joshna Chinappa went down fighting to the Malaysian duo of Nicol David and Beng Hee Ong in the quarter-finals of the mixed doubles on Tuesday.
Dipika Pallikal and Joshana Chinappa both the glamorous Chennai girls are let their racquets speak.
Reigning national champion and top seed Joshna Chinappa asserted her supremacy by clinching the women's title with a facile victory over local girl Surabhi Mishra in the Jaipur club Harish Chandra Golecha squash tournament in Jaipur on Wednesday.
Joshna Chinappa held off a fighting Dipika Pallikal 13-15, 12-10, 11-13, 11-4, 11-4 in 78 minutes to win her biggest title till date.
India's top-ranked female player Dipika Pallikal kept the tri-colour fluttering by progressing into the quarter-finals of the women's singles squash event, even as compatriots Saurav Ghosal and Joshna Chinappa bowed out at the Punj Lloyd PSA and WISPA Masters in New Delhi.
Aiming for that elusive singles Commonwealth Games medal Saurav Ghosal and Joshna Chinappa will make one last-ditch effort to break the jinx in Birmingham.
Ritwik Bhattacharya and Joshna Chinappa booked their place in the quarter-final with contrasting wins at the Asian Games.
Chinappa lost 6-11, 12-10, 7-11, 11-8, 3-11 to Camille in a 70-minute marathon tussle on Wednesday.
India's leading squash players Dipika Pallikal and Joshna Chinappa, who couldn't see eye to eye after an acrimonious quarterfinal in the Incheon Asian Games, have buried the hatchet to be friends again ahead of a busy upcoming season.
India's top squash player Joshna Chinappa fell at the final hurdle after giving a close fight to top seed Joelle King of New Zealand in the PSA HKFC International squash tournament in Hong Kong on Saturday. The New Zealander won 11-9, 11-9, 9-11, 11-9. After coming through two five-game encounters earlier, the third seed Indian still looked fresh for another battle. Only once has Joshna beaten Joelle earlier in their eight meetings and that too seven years ago. Much has happened since. Joelle is 9th in the world, four rungs above Joshna but it proved a lively match with points going neck and neck. In fact the Indian had led 9-8 in the first game where Joelle came up with three winning drives.
The Indian team, comprising Joshana Chinappa, Dipika Pallikal Karthik, Sunayna Kuruvilla and Tanvi Khanna, are assured of at least a silver now and are likely to face Hong Kong in the final.
14-year-old Anahat Singh was on Tuesday included in India's squash squad for the Commonwealth Games in Birmingham, starting on July 28.
India defeated Canada 2-0 to finish ninth in the World Women's Team Squash Championship in Paris on Saturday.
The experienced Ghosal, seeded second in the tournament and ranked 30th in the world, needed just 43 minutes to thrash the 10th-seeded Malhotra. Ghosal kept his rival on the run with an array of shots and dominated the proceedings.
India's Dipika Pallikal returned to top form after two forgettable tournaments as she notched up one of the best wins of her career.
Para-archer Ankit hospitalised after testing positive for COVID: SAI
The Indian squash contingent began its Asian Games campaign with comfortable victories over Singapore and Pakistan.
Indian women's squash team ended their successful Asian Team squash Championship with a silver medal as they lost to Malaysia by 0-2 margin in the final, in Taipei, on Sunday.
India's highest ranked squash player and World No 15 Saurav Ghosal and women's No 1 seed Joshna Chinappa toyed with their respective rivals to defend their titles successfully in the 38th Bombay Gymkhana-HSBC Maharashtra State Open Senior Squash Championship in Mumbai on Saturday.
Malaysia and India took the top-two spots in their pool to make the semifinals which guarantee them at least a bronze.
The fifth seeded pair, who had a shaky pre-quarterfinal match against a Malaysian duo, was in terrific touch in the quarterfinal match against third seed Tesni Evans and Peter Creed of Wales.
Dipika and Joshna made history in 2014 when they won the women's doubles gold at the CWG. Compared to Asian Games, the competition in CWG is much tougher with all top nations competing, barring Egypt.
A summary of sports events and sports persons, who made news on Thursday.
Joshna Chinappa continued her impressive run to reach the quarter-finals of the $115,000 Qatar Classic squash tournament in Doha on Monday.
The two Indian women made the final of the tournament with contrasting victories on Saturday
India witnessed a disappointing start to its campaign at the World Women's Team Squash Championship as they were crushed 0-3 by top seed and title-favourite Egypt in their opening Pool A league match, in Paris on Monday.
India pulled out of the Women's World Team Squash Championship scheduled to be held in Kuala Lumpur, Malaysia from December 15 to 20 due to "lack of preparation time" and "uncertainties" about travelling amid the COVID-19 pandemic.