Gloucestershire 31 for 0 (Bancroft 18*, Dent 7*) trail Sussex 358 for 9 (Wright 118, Brown 52, Jordan 50) by 327 runs
Luke Wright made his first century since 2015 to give Sussex the advantage on the opening day of their Specsavers County Championship match against Gloucestershire at Hove.
Wright, in only his third game since giving up the captaincy, made 118, his best score since he hit a career-best 226 against Worcestershire in September 2015. It was also his first hundred at Hove for two days shy of two years.
With his successor as captain, Ben Brown, making 52 and Chris Jordan 50, Sussex recovered from 69 for 3 to post 358 for 9 declared.
They then had seven overs in the twilight with the pink ball but Gloucestershire openers Cameron Bancroft and Chris Dent got through unscathed, reaching 31 for 0 at stumps.
A crowd of 2,000 was boosted by around 650 local schoolchildren and they enjoyed an entertaining day with Wright leading an aggressive counter-attack by Sussex during the afternoon session when they plundered 173 runs.
Wright was in the mood from the very start, lofting his first ball from off-spinner Jack Taylor for one of three sixes. There were also 14 fours including a straight drive to the boundary which brought up the 17th century of his first-class career.
The way Wright, and later Brown and Jordan, stroked the pink ball over a fast outfield was in contrast to what happened at the start of the day and again when Gloucestershire took the new ball and immediately claimed three wickets.
Fit-again Liam Norwell and David Payne were rewarded with a wicket apiece as Harry Finch and Delray Rawlins, opening after Chris Nash was struck in practice and suffered a concussion, departed cheaply.
Luke Wells hit seven fours in his 36 before Taylor had him caught at slip, after the ball had deflected off wicketkeeper Gareth Roderick.
Wright then transformed the day, first with Stiaan van Zyl with whom he added 99 in 19 overs before the South African was held at short leg off Taylor, and then alongside his successor as captain.
If anything, Wright and Brown increased the tempo. Both attacked anything off line and the ball had to be changed after 54 overs after Wright had clattered it into the protective covers beyond the boundary.
His hundred came up off exactly 100 balls while new skipper Brown, returning after six weeks out with a broken finger, matched him shot for shot as they put on 92 in 18 overs. Brown fell two balls after reaching 50 from 60 deliveries with seven fours and a six and Wright departed after tea to a brilliant one-handed catch at midwicket by Phil Mustard, his 118 coming off 129 balls.
David Wiese and Chris Jordan took the attack back to Gloucestershire, adding 57 in 13 overs for the seventh wicket but the new ball swung markedly as the floodlights took effect and Gloucestershire picked up three quick wickets, Craig Miles taking two of them in the same over including Jordan for a 78-ball 50 with eight fours.
Sussex declared shortly after claiming a fourth bowling point but couldn't make a breakthrough before the close.