Question: During the 1985 World Games that took place at Slazenger Racquet Club, what days did it take place?

Context paragraphs:
2017 Memphis Open: The 2017 Memphis Open was a tennis tournament, played on indoor hard courts.  It was the 42nd edition of the Memphis Open, and part of the ATP World Tour 250 series of the 2017 ATP World Tour.  It took place at the Racquet Club of Memphis in Memphis, United States, from 13 through 19 February 2017.

Liverpool Racquet Club: Liverpool Racquet Club was a gentlemen's club in Liverpool, Merseyside, England.  It was founded in 1874 to provide facilities for gentlemen to play real tennis and other racquet games.  They selected a site in Upper Parliament Street for their building, which opened in 1877.  Originally it provided two racquet courts, and an American bowling alley.  Soon after this, a new dining room and a billiards room were added.  In 1894 further alterations were made, including the conversion of the bowling alley into two fives courts, one for Eton Fives and the other for Rugby Fives.  By 1900 the Rugby fives court was being used as a squash court.  In 1913 a covered lawn tennis court was added.  By 1936 all the courts were being used for squash.  Residential accommodation was added at that time.  The building was damaged during the Second World War, during which time the Club gave hospitality to officers of the Royal Navy.  On 6 July 1981 the Club building was destroyed in the Toxteth riots.  Following this, the Club bought the lease of Hargreaves Building in Chapel Street, and converted it for their purposes.  This was sold in 2001, and the building became the Racquet Club Hotel.

U.S. National Indoor Tennis Championships: The U.S. National Indoor Tennis Championships was a professional tennis tournament that was last held at the Racquet Club of Memphis in Memphis, Tennessee, United States.  The event was played on indoor hard courts and usually took place in February.  For much of its more than 100-year history it was a combined men's and women's tournament but in 2014 only a men's tournament was organized.  The event was previously known under various sponsored names including the Memphis Open, the Regions Morgan Keegan Championships, the Kroger St. Jude Championship, and the Volvo Championships.  It ended after the 2014 event.

2014 U.S. National Indoor Tennis Championships: The 2014 U.S. National Indoor Tennis Championships was a 2014 ATP World Tour tennis tournament, played on indoor hard courts.  The tournament from this year was downgraded from ATP World Tour 500 series to ATP World Tour 250 series.  It was the 39th edition of the first American tournament of the year and took place at the Racquet Club of Memphis in Memphis, United States, from 11 through 17 February 2014.

David Lloyd Leisure: David Lloyd Leisure is a British sports, health and leisure business that runs health clubs and gyms across Europe.

2016 Memphis Open: The 2016 Memphis Open was a tennis tournament, played on indoor hard courts.  It was the 41st edition of the event known that year as the Memphis Open, and part of the ATP World Tour 250 series of the 2016 ATP World Tour.  It took place at the Racquet Club of Memphis in Memphis, United States, from 8 through 14 February 2016.

Racquetball at the 1985 World Games: The racquetball competition at the 1985 World Games took place from July 25 to August 4 in London, England.  Thirty-eight players competed at David Lloyd's Slazenger Racquet Club.

2013 U.S. National Indoor Tennis Championships: The 2013 U.S. National Indoor Tennis Championships was an ATP World Tour and WTA Tour event held at the hardcourts of the Racquet Club of Memphis in Memphis, Tennessee, United States.  It was the 38th edition of the U.S. National Indoor Tennis Championships and the 28th edition of the Memphis WTA International Event.  The U.S. National Indoor Tennis Championships is part of the ATP World Tour 500 series on the 2013 ATP World Tour, and the Memphis International is an International-level tournament on the 2013 WTA Tour.  The event took place from February 16 to February 24.

1985 World Games: The 1985 World Games, the second World Games, were an international multi-sport event held in London, the capital city of Great Britain and Northern Ireland.  Three main venues were used, the main one being the Crystal Palace National Sports Centre. The opening ceremony was held at the Wembley Conference Centre.  The master of ceremonies was television commentator Ron Pickering.  Competitors were addressed by World Games Association President Dr Un Yong Kim,Games Patron Ryoichi Sasakawa and British Olympic Association Chairman Charles Palmer.  Sports included , field archery, taekwondo, karate, sambo, powerlifting, finswimming, roller sports, casting, korfball, water skiing, speedway, faustball, softball and netball.  The netball results reversed the results of its recent world cup, with New Zealand winning gold to Australia's silver.  Similarly, 3rd and 4th places were reversed, with Jamaica winning bronze against England.

2015 Memphis Open: The 2015 Memphis Open was a tennis tournament, played on indoor hard courts.  It was the 41st edition of the event known that year as the Memphis Open, and part of the ATP World Tour 250 series of the 2015 ATP World Tour.  It took place at the Racquet Club of Memphis in Memphis, United States, from 9 through 15 February 2015.

Supporting paragraphs: Racquetball at the 1985 World Games David Lloyd Leisure
Answer: July 25 to August 4