Electing to bat, Gaikwad slammed nine boundaries and two sixes in his 76-ball innings, while fifth-down batsman Shaikh hit three fours and as many sixes in his 66-ball stay to power Maharashtra to a challenging 270 allout in 48.5 overs.
Maharashtra then dished out a disciplined bowling performance with Shrikant Mundhe returning with a four-wicket haul and Nikit Dhumal and Shamshuzama Kazi snapping two wickets each as they dismissed Tamil Nadu for 248 with five balls to spare.
In another match, Akshdeep Nath plundered a 117-ball 143 studded with 19 fours and three sixes to power Uttar Pradesh to a mammoth 387-5 after they were invited to bat by Kerela at the KIIT Stadium.
Chasing the enormous target, Kerela failed to put up a fight as they were bundled out for 142 in 32 overs as UP notched up a massive 245-run victory.
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At Barabati Stadium, Himachal Pradesh skipper Ankush Bains' decision to bowl first backfired as Tripura posted 206 all out in 49.5 overs.
Summarised scores:
At DRIEMS Ground, Maharashtra 270 allout in 48.5 overs (RD Gaikwad 82, NS Shaikh 68; M Mohammad 2/36) beat Tamil Nadu 248 allout in 49.1 overs (B Indrajith 49; SS Mundhe 4/43)
At KIIT Stadium, Uttar Pradesh 387 for five in 50 overs (AD Nath 143; V Vinod Kumar 2/83) beat Kerela 142 all out in 32 overs (Vishnu Vinod 32; P hawla 3/19)
At Barabati Stadium, Tripura 206 all out in 49. 5 overs (N Sen Chowdhury 51; P Jaiswal 4/32) beat Himachal Pradesh 68 allout in 15 overs (Sumeet Verma 31; AK Sarkar 6/31).
Disclaimer: No Business Standard Journalist was involved in creation of this content