Sussex Seconds 254/6 Middlesex Seconds 258/3
Delray Rawlins and his Sussex Seconds teammates won the toss at Southgate and elected to bat first against Middlesex on a bright day at the historic Walker Ground.
Sussex got off to the best possible start, putting on 132 for the first wicket, before Ethan Bamber eventually made the breakthrough in the 32nd over to dismiss Angus Robson, brother of Middlesex's Sam, who was caught by Ollie Rayner for an impressive 74.
Three overs later, with Sussex looking to up the pace of their innings, they lost their second wicket, when Bamber returned the favour, catching Rawlins off the bowling of Rayner for 12 with the score on 180.
Opener Phil Salt had batted superbly throughout, and reached three figures in the 47th over, before succumbing to the pace of Arthur Godsal, who cleaned him up for a fine 102.
Middlesex set about their reply with Nick Compton and Tom Lace at the crease, although in only the fourth over they lost the former England man for just two, caught by Burgess off the bowling of Stuart Whittingham.
Lace was joined in the middle by George Scott, and the pair set about putting a huge dent in Sussex's lead, batting superbly for the second wicket partnership.
Lace brought up a marvellous half century off 57 balls, as did Scott, off 61 balls and the Middlesex reply was in good health, on 113 for 1 at the end of the 22nd over.
Lace continued to dominate the Sussex bowlers and progressed rapidly into the nineties, before falling for a magnificent 93 off 103 deliveries, bowled by Whittingham with the score on 172 for 2 in the 37th over.
Scott then fell soon after, LBW, for an equally well worked 81, with Whittingham again picking up the wicket, his third of the innings.
The Middlesex reply then came down to Ollie Rayner and Don Manuwelge, who put on 68 for the fourth wicket to take the hosts to their victory target, just three wickets down, with 17 balls to spare.
Rayner finished unbeaten on 49 and Manuwelge on 22 not out, with Whittingham being the only shining light for the visitors, finishing with figures of 3 for 60.