Promotion chasers Sussex needed a spirited last-wicket partnership between Jofra Archer and Danny Briggs to gain the upper hand over Glamorgan at Hove in Specsavers County Championship division two.

Sussex had the better of the opening session in a day-night match, but the Glamorgan bowlers proved tenacious and took five wickets in a 20-over spell, assisted by a pink ball that swung after lunch.

However, the partnership of 61 between Archer (19) and Briggs (46) saw Sussex to a third batting point for passing 300 before they were dismissed for 327.