|Specsavers County Championship Division One, The 1st Central County Ground, day one|
|Gloucestershire 332-7: Klinger 106*, Mustard 71, Miles 56*; Magoffin 4-62|
|Sussex: Yet to bat|
|Gloucestershire 3 pts, Sussex 2 pts|
Michael Klinger's unbeaten 106 helped Gloucestershire make a positive start against Sussex on day one at Hove.
Gloucestershire got off to a poor start as Steve Magoffin (4-62) took three wickets in the opening 10 overs to reduce the visitors to 19-3.
But on-loan Phil Mustard helped turn round their fortunes, putting on 133 for the fifth wicket with Klinger until he was bowled by Danny Briggs for 71.
Klinger hit 11 fours for his century as Gloucestershire ended the day on 332-7.
Craig Miles will resume with Klinger on day two on 56 not out.