FRIENDS PROVIDENT t20, Gloucester:
Sussex 168-3 (15.5 overs) beat Glos 166-8 by seven wickets
Matt Prior's previous best in Twenty20 was 73 against Essex at Hove in 2006
England wicketkeeper Matt Prior led the onslaught as Twenty20 holders Sussex completed a fourth straight win with a seven-wicket victory at Gloucester.
After Gloucestershire had reached 166-8 from their 20 overs, Prior led the assault as Sussex powered to victory with 25 balls to spare.
Prior hit an unbeaten 90 off just 49 balls, comfortably his highest score in eight seasons of Twenty20 cricket.
He belted three sixes and 11 fours as Sussex reached their target on 168-3.
Sussex remain top of the South Group with their fourth win in 11 days - but only by two points from Glamorgan, who have won their first three.
And the reigning Twenty20 champions should face their toughest test yet when they head for Cardiff to take on Glamorgan this Sunday (1100 BST).
Prior's last appearance at Sophia Gardens was for England in last summer's first Ashes Test.
And, having been left out of England's 13-man one-day international squad earlier this week, he issued a powerful message to the England selectors.
Chris Taylor top-scored with 35 for the Gladiators, as cricket returned to Gloucester's Kings School for the first time since 2008. But their total was never likely to deter a batting line-up ideally equipped to take advantage of the Archdeacon Meadow boundaries.
And Sussex effectively had the game in the bag after amassing 71 runs during the power-play for the loss of Brendan McCullum.
Brash and brutal in equal measure, New Zealander McCullum gave the reply early impetus, crashing 22 off 10 balls, striking three fours and a six to confirm his reputation as a bruiser of Twenty20 new ball bowling.
Thereafter, Prior took centre stage, his 50 occupying just 28 balls and sending a timely reminder to the selectors, who preferred Somerset's Craig Kieswetter for the one-day international series against Australia and the match against Scotland.
Aggressive from the outset, the South African-born 28-year-old clearly had a point to prove, smashing three sixes and 11 fours.