Australia’s captain Pat Cummins won the toss and opted to bat in the fourth Test against India at the MCG. India fielded two spinners, with Nitish Kumar Reddy replacing Shubman Gill. The series is tied 1-1, making this Boxing Day Test crucial. Both teams made notable changes to their playing XIs.source https://timesofindia.indiatimes.com/sports/cricket/india-in-australia/ind-vs-aus-4th-test-shubman-gill-misses-out-washington-sundar-comes-in-australia-opt-to-bat-vs-india/articleshow/116665662.cms
