Root's Yorkshire struggling, Duckett fires in another 50, Robinson scores 100

Friday's County Championship saw England stalwart Joe Root struggle with Yorkshire under the pump, Nottinghamshire's Ben Duckett strike his third half-century in a row and Ollie Robinson score a huge 100 for Sussex.

Jack Carson and Robinson made centuries batting at numbers nine and 10 respectively as Sussex rallied from 92-7 against Surrey to 358-9 declared.