Jos Buttler slammed a ton after Prasidh Krishna and Obed McCoy picked up three wickets as Rajasthan Royals booked the finals berth with a seven-wicket win over Bangalore at the Narendra Modi Stadium in Ahmedabad.
Rajasthan now face Gujarat Titans in the final on Sunday night. Chasing 158 for the win.
Earlier, Patidar played with supreme confidence after high-profile openers Virat Kohli (7) and Faf du Plessis (25) failed to come up with impactful knocks.
The uncapped Indian hit a 42-ball 58 but his effort was the lone bright spot of the RCB innings.
Royals gained the upper hand by taking five wickets in the last five overs that went for only 34 runs.
Krishna, hammered for three straight sixes in the final over against Gujarat, lifted his game in the slog overs as well to dismiss the in-form Dinesh Karthik and Wanindu Hasaranga off successive balls.