The disciplinary hearing to determine whether Jamaica and West Indies cricketer John Campbell refused to provide a testing sample to representatives of the Jamaica Anti-Doping Commission (JADCO) ended on Thursday.

The Jamaica Observer has learnt that written submissions are due from both legal teams on September 1, while oral submissions are to be made on September 5.

Campbell, 28, is represented by attorneys-at-law Ayana Thomas and Mark-Paul Cowan of Nunes, Scholefield, DeLeon & Co, while attorney Andre Sheckleford is said to have presented the case on behalf of JADCO.

The two-day hearing, in front of the independent anti-doping panel comprising Chairman Kent Gammon, Dr Marjorie Vassell and Dean Martin, was held behind closed doors at an undisclosed location in the Corporate Area.

The Observer could not confirm what evidence was presented so far, but the allegation is that Campbell refused to provide a sample to JADCO Doping Control Officers on April 20.

An athlete could be deemed in violation of the anti-doping rule for "evading, refusing or failing to submit to sample collection", and if found guilty, could be banned for up to four years.

Campbell, a standout batsman as a national youth player, transitioned to the senior team, making his first-class début for Jamaica against Guyana in 2014. He averages 30.41 in first-class cricket.

He played his first Test for the West Indies in 2019 and, after 20 matches, he averages 26.11 with three half-centuries. In the two-Test series victory over Bangladesh in June Campbell showed signs of coming to grips with international cricket, averaging 68 with a best of 58 not out.

In six one-day internationals for the West Indies, he averages 49.6 with a best of 179 against Ireland.

— Sanjay Myers