With the result, Gujarat have retained their second spot with 18 points after six matches, while Karnataka have slipped to fourth with 15 points in five games.
Gowtham finished with figures of 46.4-10-139-6.
Gowtham was the only India A bowler to pick up a wicket, as the New Zealand A openers put on 121 runs. Mohammed Siraj and Gowtham did the bulk of the bowling while medium pacer Deepak Chahar proved to be ineffective.
Rajasthan Royals 164 for 5 in 20 overs [ Rahul Tripathi 80* (58), Ajinkya Rahane 33 (31); Umesh Yadav 4-1-25-3, Mohameed Siraj 4-0-33-1] beat Royal Chalengers Bangalore 134 allout in 19.1 overs [ AB de Villiers 53(35), Parthiv Patel 33 (21); Shreyas Gopal 4-0-16-4, Ben Laughlin 2-0-15-2] by 30 runs.
Rajasthan Royals 158 for 8 in 20 overs (Jos Butter 82, Sanju Samson 22, Ben Stokes 14; Andrew Tye 4 for 34, Mujeeb Ur Rahman 2 for 21) beat Kings XI Punjab 143 for 7 in 20 overs (KL Rahul 95*, Marcus Stoinis 11; Krishnappa Gowtham 2 for 12, Ish Sodhi 1 for 12, Ben Stokes 1 for 13, Jofra Archer 1 for 32, Jaydev Unadkat 1 for 36) by 15 runs
Krishnappa Gowtham starred in RR's win over MI with his 11-ball 33* heroics.
Krishnappa Gowtham's 11-ball 33 handed RR 3-wicket win over MI.
Jofra Archer was the catalyst in denying MI a 200-plus target.
Krishnappa Gowthtam was Rajasthan Royal's (RR) first buy on day two of Vivo IPL auction 2018.
Krishnappa Gowtham today said his team picked up some tricks by watching Royal Challengers Bangalore's(RCB) previous game.