Sussex legspinner Archie Lenham replaces injured Liam Dawson for Southern Brave

Southern Brave have signed Archie Lenham, the 17-year-old Sussex legspinner, as a last-minute replacement for the injured Liam Dawson and included him in the squad for their winner-takes-all fixture against Oval Invincibles on Monday night.

Earlier this summer, Lenham became the first player to make an appearance in the T20 Blast who was born after the competition's inception in 2003 and went on to take ten wickets in nine group games with an economy rate of 7.71. His father, Neil, and grandfather, Leslie, were both former Sussex players.

Lenham is the fourth frontline spinner in the Brave squad after Danny Briggs, Jake Lintott and Max Waller - who was unavailable for their last game against Welsh Fire after becoming a parent - but is in contention to make his debut against Invincibles as a surprise late pick.

Dawson was ruled out of the competition last week after fracturing a finger on his right hand when Phil Salt hit a ball straight back at him during the no-result against Manchester Originals at Emirates Old Trafford. "Hopefully back to normal in 4-6 weeks," he tweeted.

The winner of Monday night's game will join Trent Rockets and Birmingham Phoenix in the knockout stages of the men's competition, with the loser eliminated.