We take a look back at some of the highlights from previous Finals Days ahead of this year's event.
Nottinghamshire's last-ball win earned them top spot in Group B and a home quarter-final in the Royal London Cup.
We look at the form and men to watch from the four teams vying for Twenty20 glory on Finals Day.
Warwickshire club captain Jim Troughton has announced his retirement with immediate effect due to a back injury.
Yorkshire beat Sussex by nine wickets at Scarborough to move six points clear at the top of the LV= County Championship.
Warwickshire trio Laurie Evans, Oliver Hannon-Dalby and Richard Jones have all signed new contracts with the club.
Kane Williamson converted his maiden century for Yorkshire into a fine 189 to put the home side on top against Sussex.
Paul Horton's 114 and Ashwell Prince's unbeaten half-century helped Lancashire make a spirited response to Durham's 340.
Alex Hales and James Taylor scored centuries as Notts kept their Royal London One-Day Cup quarter-final hopes alive.
Ben Stokes cracked 103 to lead Durham to a crushing six-wicket victory over Notts in Group B of the Royal London Cup.
Sussex defeated Somerset in the only one of six Royal London One-Day Cup fixtures to beat the bad weather on Sunday.
Sussex claimed an unlikely three-wicket victory over Durham, while a thriller between Surrey and Kent ended in a tie.
Kent scraped a two-run Duckworth-Lewis victory in a thrilling Royal London One-Day Cup clash with Somerset at Taunton.
Hampshire will play Lancashire in the NatWest T20 Blast semi-finals, while Surrey will take on Birmingham.
Nottinghamshire and Somerset remain unbeaten in Group B of the Royal London One-Day Cup after a tie at Trent Bridge.
New Zealand ‘A’ and Sri Lanka ‘A’ will meet in Cardiff on Saturday ahead of forthcoming triangular series.
Somerset enjoyed a winning start to their campaign in Group B of the Royal London Cup, while Glamorgan saw off Surrey.
Birmingham Bears reached the T20 Blast quarter-finals at Yorkshire Vikings' expense in the North Group.
Chris Jordan and James Tredwell bowled Sussex to a 226-run win over Warwickshire at Horsham.
The inaugural Royal London One-Day Cup, county cricket's new 50-over competition, gets under way on Saturday.