Sandeep hit 14 fours and four sixes for a top score of 128 not out and Ejaz hammered eight boundaries and four sixes in his 111 not out for their team to post 273 for one in the allotted 25 overs.
The two shared an unbroken 232-run stand for the second wicket.
Darwish bin Ahmed in reply plodded to141 for eight, but had better fortune against Abu Dhabi Islamic Bank, whom they beat by eight wickets in the second game to advance into the pre-quarter finals.
Fahad Butt bagged five for 14 from his quota of five overs to send National Drilling Company crashing to 61 all out in reply to Electro Cooling Centre’s 227 for six in another game.
Opener Shams Butt and one-drop Asanka Chandana hit half centuries to boost Electro Cooling Centre’s total. Fahad and Rizwan Mustafa (3-30) sharing the opening ball ran through the NDC inning.
Pre-quarter finals starting from Sunday (all matches at 7.30pm): Avis v UAE Xchange, Electro Cooling Centre v Bin Jamal Cars, Punjab Gentlemen v Thrifty Rent-A-Car, UBL v Eleven Stars, Thani Murshid Uniliver v Darwish bin Ahmed, Al Mehairi v NBB Investments, Nissan Al Masaood v First Gulf Bank, Abu Dhabi Gymkhana v National Drilling Company.
Scores in brief: UAE Xchange bt Darwish bin Ahmed by 132 runs. UAE Xchange 273 for 1 in 25 overs (Umer Baig 23, Sandeep Dhuri 128 not out, Asim Ejaz 111 not out). Darwish bin Ahmed 141 for 8 in 25 overs (Waqar ul Haq 22, Habib ur Rahman 48, Geeth Silva 2-19, Imtiaz Rasool 2-19, Mohammed Shabir 2-11).
Darwish bin Ahmed bt Abu Dhabi Islamic Bank by 8 wickets. Abu Dhabi Islamic Bank 73 all out in 19.4 overs (Arshad Hussain 3-23, Shakeel Hafeez 3-24). Darwish bin Ahmed 74 for 2 in 10.2 overs (Adarsh Shetty 26 not out, Waqar ul Haq 35 not out, Zaman Sharif 2-7).
Electro Cooling Centre bt National Drilling Company by 166 runs. Electro Cooling Centre 227 for 6 in 25 overs (Shams Butt 63, Asanka Chandana 63, Fahad Butt 32, Maqsood Ahmed 25, Biju Nair 3-33). NDC 61 all out in 13.4 overs (Rizwan Mustafa 3-30, Fahad Butt 5-14).
Eleven Stars bt ABN-Amro by 8 wickets. ABN-Amro 175 all out in 24.4 overs (Khalid Hameed 50, Rahim Butt 22, Asif Khan 4-47). Eleven Stars 179 for 2 in 20.2 overs (Asif Khan 76 not out, Nisar Ali 23, Mohammed Nadeem 40 not out).