|Specsavers County Championship Division Two, Bristol County Ground, day three|
|Gloucestershire 229 & 88-3: Dent 47; Briggs 2-15|
|Sussex 435: Brown 118*, Wells 75; Shaw 5-79, Miles 4-109|
|Gloucestershire (3 pts) trail Sussex (7 pts) by 118 runs|
Sussex captain Ben Brown scored his third century of the season as the visitors took a first-innings lead against Gloucestershire on day three.
Resuming on 208-4, Brown made 118 not out as Sussex were dismissed for 435, with Philip Salt making 42.
Josh Shaw, on loan at Gloucestershire from Yorkshire, took career-best bowling figures of 5-79.
The hosts closed 118 runs behind on 88-3 in their second innings, with opener Chris Dent unbeaten on 47.
Sussex's dominance with the bat on Thursday owed much to Brown, who hit 17 fours, and 20-year old Salt, who is playing in only his third Championship game.
Salt fell eight short of a half-century when he was caught behind by Phil Mustard off Craig Miles (4-109).
Sussex vice-captain Ben Brown:
"There is a bit of spin there, it will be tough for them. It's not doing much for the seamers.
"To experience winning Championship games will be great for the younger players.
"It's a great experience, you can't beat that winning feeling."