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.
A brilliant innings by Richard Oliver failed to prevent Worcestershire's first Championship defeat of the season.
England spinner Monty Panesar took 5-50 as Essex put themselves in a winning position against Glamorgan.
Worcestershire endured one of their worst days of the summer as they were dismissed for 194 by Gloucestershire.
Essex wicketkeeper-batsman Ben Foakes is joining Surrey at the end of the season.
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.
Doug Bollinger claimed 5-35 as Kent eased to a six-wicket win over Glamorgan in the Royal London One-Day Cup.
Alex Hales and Jason Roy shone with the bat as England Lions clinched a 51-run victory over Sri Lanka A at Taunton.
Sussex claimed an unlikely three-wicket victory over Durham, while a thriller between Surrey and Kent ended in a tie.
Surrey claimed a three-wicket victory over Worcestershire Rapids in their NatWest T20 Blast quarter-final at The Oval.
Hampshire will play Lancashire in the NatWest T20 Blast semi-finals, while Surrey will take on Birmingham.
Kent scraped a two-run Duckworth-Lewis victory in a thrilling Royal London One-Day Cup clash with Somerset at Taunton.
Somerset enjoyed a winning start to their campaign in Group B of the Royal London Cup, while Glamorgan saw off Surrey.
Glamorgan secured the last quarter-final spot in the South Group, while Sussex's Luke Wright made a record 153 not out.
Surrey fast bowlers Matthew Dunn, Jade Dernbach and Chris Tremlett have signed new contracts.
A record T20 crowd at Lord’s were treated to a thrilling finish as Surrey beat Middlesex on the last ball of the game.