Chasing a target of 155, Royals could manage only 121/6.
The 20-year-old Rajasthan Royals pacer claimed two wickets and conceded just one run to single-handedly win the IPL match for his team.
Kings required only four runs off the last six balls but Tyagi dismissed Nicholas Pooran (32) and Deepak Hooda (0) and gave away only one run to snatch the win for his team from the jaws of defeat.
The IPL 2021 resumes in the UAE on September 19.
Kundra is a former co-owner of IPL side Rajasthan Royals. Rahane has led Royals in the past.
Emerging Media and RedBird, which is founded by former Goldman Sachs Partner Gerry Cardinale, announced the stake acquisition in a joint statement on Thursday but did not disclose financial details of the transaction.
Nine-year-old Vighnaj Prejith's drives with back and across movement are being discussed in the media as a sign of India's batting talent depth.
Badale said finding space on the calendar would be the biggest obstacle with India set to host the T20 World Cup in October.
He was 42 and was battling the infection for the past few days.
"The moment we heard that, when players are testing positive, inside the bubble, then everyone starts asking questions. The alarm bells definitely started going off for all of us," said the Rajasthan Royals all-rounder.