India, Feb. 19 -- As a player, Robin Uthappa might have sidestepped the question or settled for a diplomatic response. Even as a commentator, he paused briefly when asked about India's biggest weakness, something he would target if he were on the opposition side. But once Aryan Dutt troubled India's top order with his accuracy, and Colin Ackermann chipped in with control, the answer became clearer.

"India have an off-spin issue," Uthappa said, just before India sealed an unbeaten group-stage finish on Wednesday in Ahmedabad against the Netherlands

It was hardly a revelation. With six left-handers in the XI, opposition teams have predictably turned to right-arm off-spin, and the results have been telling.

Among all 20 teams in the T20 W...