Put into bat, Saurashtra rode on Jackson's impressive 107-ball 106 and Pujara's 60 off 92 balls to post 286/7 and then restricted Chattisgarh for 254/9 to run away with all four points from the Group D match.
Opener Robin Uthappa and Ravindra Jadeja, who batted at number four, contributed 9 and 23 respectively for Saurashtra.
In another Group D match, India pacer Umesh Yadav was among the wickets as Vidarbha beat Jharkhand by seven runs.
Saurabh Tiwary (65) and Kumar Deobrat's (60) half tons went in vain for Jharkhand as they fell short by seven runs.
Besides Yadav (2/69), Rajneesh Gurbani (2/52) and Yash Thakur (2/45) also chipped in for Vidarbha who took away all the four points with the win.
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