Horse racing was well established at the  club by early December 1904, when the times announced eight races, including one for the King’s Gold Cup. Phraya Gadadharabodi recalled that horse owners include both noble Thais and foreigners, each with his own colours.

The first cricket match took place on the Sports Club ground.

Squash courts were added to the Club’s facilities in 1908, three years after they were first proposed. Their earliest known competition use was in 1910 when players were invited to compete for the Chiengmai Challange Cup presented by D.F. Macfie. This cup is still prominent on the Club’s annual squash calendar and played for in one of the oldest squash competitions in the world.

The kingdom was plunged into mourning on 23 October 1910 by the death of King Chulalongkorn. Who had not only been the longest-serving ruler of the Chakri Dynasty but also the chief mover in the implementation of revolutionary social changes affecting every aspect of the kingdom’s life.

The project was an extraordinary one, yet typical of the dazzling innovations then being introduced to Thailand. Just seven years after Wilbur and Orville Wright demonstrated around Southeast Asia with Charles Van Den Born, a French aviator. Following the success of the first show at the racecourse in Saigon, he had arranged that The Royal Bangkok Sports Club stage a similar event at the end of January.

J. Caulfield James, Chairman of the Club, applies to the Privy Purse for loan of 250,000.- to demolish clubhouse and build new one; approved by King Vajiravudh; given by the Department of Finance,1913.

The opening of the clubhouse was held on 23 November and was, according to various accounts, a gala event that attracted much attention. The King arrived in a four-horse carriage  at a quarter past four in the afternoon and was greeted by Caulfield James and the Committee.

The Elephant Trophy for cricket, it may be recalled, had been lost to Penang an interport game in the early thirties. During the war it lay hidden in one of the Penang Club’s shed, wrote Ken Gregory in a 1985 recollection, and it was not until after the war that he or she as the case may be was discovered.

Racing is suspended at the Club in March; on 8 December Japanese army takes over the Club premises; Mom Chao Rachada Bhisek Sonakul becomes first Thai Chairman of the Club, remaining in office until 1946.

The swimming pool continued to be the Club’s biggest family attraction, even more so when a special wading pool for children was added in 1955. More sundeck chairs were acquired, as well as call buttons for prompt food service and a new members whose offices homes were conveniently.

New 25-metre pool adds to the Club’s facilities; other improvements include new sports pavilion with incorporated spectator stand, air-conditioning of men’s and ladies’s changing rooms, and extension of main office.

One significant change for the Club actually came quite soon. For some time, there had been varying opinions over the best way to meet the steadily growing deman for membership, In view of the limited facilities.

A Lawn Bowls Section was established in late 1979, About a year after such enthusiasts as Preben A.F. Aakesson, Tom Adams, and Len Alexander began stirring up interest.

A Riding section was formed in 1981. That year the section had twenty-three horses and Thirty ponies as well as fifteen privately owned mounts.

The old swimming pool, finally beginning to show its age due to heavy use and land subsidence, underwent a major renovation in 1977, adding more efficient gutters to the water citculation system, and a new twenty-five-metre pool was also built to serve younger children  as well as adults

RBSC celebrates 100th Anniversary and hosts the 28th Asian Racing Conference. Club’s official magazine, the RBSC Magazine is launched. The Winning Post is  built at the Grand Stand.

Official opening ceremony of the Rajkreetha Sports Complex in the presence of His Majesty the King’s Representative, His Royal Highness Crown Prince Maha Vajiralongkorn. 30-year lease agreement for the RBSC Polo Club is signed with the Crown Property Bureau.