Fourteen teams took part in Tier A of the competition, split into two groups of seven.

[1] Bloomfield Cricket and Athletic Club finished in last place in the previous tournament, and were relegated to Tier B for this season.

[2] Negombo Cricket Club replaced them for this years' competition after they won the 2017–18 Premier League Tournament Tier B title.

[8] In the penultimate round of the Super Eight fixtures, Nondescripts captain Angelo Perera scored a double-century in each innings.

[9] This had only been done once before in first-class cricket, by Arthur Fagg for Kent against Essex in the 1938 County Championship in England.