Why was Washington Sundar picked ahead of India vice-captain Axar Patel?

India's team management prioritised match-ups over vice-captaincy, benching Axar Patel for Washington Sundar against South Africa in their Super 8 clash. Despite Axar's strong record, Sundar was chosen for his off-spin against left-handers. This decision, along with Sundar's batting position, has raised questions about the team's strategy as they enter the tournament's crucial stages.