 After an absence from first-class cricket, Dewhurst returned to play for Trinidad in 1930 when the MCC toured the West Indies. Before the series, he was named in the press as a candidate to lead the West Indies Test team. A Barbados newspaper claimed that he was the only suitable potential captain from Trinidad. The same report suggested that, while he may not have been available for every Test, he was an ideal leader if the selectors chose different captains for the matches played on each island. During the tour, and before the Trinidad Test, the Trinidad team played the MCC. Nelson Betancourt captained in the first game and won the match; Dewhurst led in the second and was defeated. Subsequently, Betancourt was selected as captain for the Trinidad Test match. Citing "insularity and prejudice" in West Indian selection, an article in a Trinidad newspaper stated: "The selection of Betancourt in preference to Dewhurst was a pre-arranged affair, the latter being only given the leadership of the second Trinidad team in order to keep quiet a suspicious and already much chagrined public." The newspaper suggested that Dewhurst had been set up to fail when the selectors gave him a weaker team to play the MCC, that he still out-performed Betancourt in captaincy, and that the decision was based on factors other than ability.
