India's fast bowler Bumrah took 19 wickets at an impressive average of 16.8, while all other seamers combined only managed to take 25 wickets at an average of 45.8 - which is 2.7 times higher.
As a result, Bumrah has earned the coveted award for the greatest difference in average between the leading seamer and all other seamers in a Test series of at least five matches (where the lowest-averaging seamer has played at least half the Tests).