Ben Slater and Steven Mullaney hit fifties before Nottinghamshire's seam-bowling battery made inroads into the Sussex line-up on day one at Trent Bridge.
Notts recovered from an early flurry of wickets to post 240 in their first innings, before James Pattinson and Dane Paterson reduced the visitors to 94/5 at stumps.
Watch the pick of the action above.
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The Royal London Cup Final
The timeless pomp, ceremony and tradition of county cricket's historic 50-over final. 18 First-Class counties go head-to-head in this prestigious competition, aiming to emerge with the spoils at our historic venue. Secure your seats here...