Ravichandran Ashwin's decision to retire on Wednesday came as a shock to the cricket world; but it was possibly his exclusion and India's switch from one spinner to another in the first three Tests of the Border Gavaskar Trophy (BGT) that led to the veteran off-spinner making up his mind to call time on his international career.
In the series opener at Perth, it was Washington Sundar who was preferred as India's spinner of choice, with Ashwin warming the bench. It presumably didn't go down well with India's second highest Test wicket-taker.