The Royal–Thomian (The Battle of the Blues) is an annual cricket match played between Royal College, Colombo and S. Thomas' College, Mount Lavinia since 1879. It is known as The Battle of the Blues due to the colours of the two school's flags i.e. blue, gold and blue of Royal College and blue, black and blue of S. Thomas' College.
The original match was played between the Colombo Academy and S. Thomas' College, Mutwal in 1879, with school masters and schoolboys participating. Mr. Ashley Walker captained the Colombo Academy while Rev. S. J. Meyrick, a member of the staff played for S. Thomas' College, Mutwal. This encounter is not considered the first match as Masters played for both sides.
In 1880, only the students took part and this first official encounter between the Colombo Academy and S. Thomas' College, Mutwal in Modara was played at Galle Face Grounds, which is today the site of the Taj Samudra Hotel. The match commenced at 4.00 p.m. each day. The Beira Lake stretched up to the present railway line close to San Sebastian Hill and the two teams rowed across in boats to the Galle Face Grounds. In this first encounter Colombo Academy won by 62 runs.
At present the match is played between Royal College, Colombo which is public non-denominational school accommodates approximately 8,000 students and S. Thomas' College, Mt Lavinia which is a private Anglican school that has about 2500 boys on roll and a branch network of three constituent colleges with a total of over 5,500 students. It was the first school boy cricket match in Sri Lanka to be played over three days.