It was owing to his performance MI managed a 40-run win against Sunrisers Hyderabad, away from home, on Saturday.
With the world talking about his performance, many are wondering who is this wonderkid.
Here, we take a look at the young pacer and his achievements.
Joseph's record-breaking 6/12 sinks SRH
Joseph put up a commendable shift as he claimed 6/12 to tame SRH.
Chasing a total of 137, SRH succumbed to Joseph's bowling.
Batsmen like David Warner, Vijay Shankar and Deepak Hooda fell prey to him.
Among the tailenders, who became his victim, were Rashid Khan, Bhuvneshwar Kumar and Siddarth Kaul.
Joseph eclipsed the record of Sohail Tanvir (6/14), which was scripted in 2008.
Joseph's spell the second-best in Asia
Alzarri Joseph's 6/12 @ Hyderabad is the second best bowling performance in a T20 match in Asia after Ajantha Mendis' 6/8 for Sri Lanka against Zimbabwe at Hambantota on 18 Sept 2012. Joseph is the first West Indian to claim a 6-wkt haul in T20 cricket!#IPL2019#SRHvMI#IPLhttps://t.co/IxkNCPb7RK