Totesport League D2, Hove: Leicestershire 227-4 (45 overs) beat Sussex 223-8 by four wickets
HD Ackerman lifted Leicestershire into the promotion places in Totesport League Two after guiding the Foxes to a last-ball, four-wicket win at Hove.
Ackerman finished unbeaten on 114, off 127 balls, to clinch victory, aided by Darren Maddy's 93.
The pair put on 185 for the second wicket after Chris Adams' 78 had formed the backbone of the Sussex innings.
Rana Naved also hit 45 off 31 balls but it was not quite enough, Ottis Gibson grabbing 4-37 for the Foxes.