Dhoni was left stifled managing only 8 off 22 balls when rain stopped play.
"Ball was turning and spinners were getting a lot of help. So we thought of setting an attacking field against Mahibhai," said Rajpoot.
With Piyush Chawla (2/21) in the middle of a fine spell, Dhoni walked out with 74/4 in 10.3 overs as Gambhir renewed his spin strategy against the struggling Indian limited overs captain.
"We wanted to create pressure and get him out early to brighten our prospects. Left-handers have it easy, while Mahibhai being a right-hander we wanted to go for an attacking field."
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Failing to break free against the spinners, Supergiants were 103/6 in 17.4 overs when rain halted play as the target was revised to 66 from nine overs on Duckworth-Lewis method.
"Wicket was very good for batting and bowling. I don't think it was bad for batting. The batsmen who applied themselves did well on this track.