Essex are yet to register a win from their opening two encounters while, Somerset were jolted by a Tom Curran special in their previous game. Corey Anderson misses the game with back spasm. Tamim Iqbal has left Essex having played a single game for the county.
Somerset: Jim Allenby (c), Johann Myburgh, Steve Davies (wk), James Hildreth, Peter Trego, Adam Hose, Tom Banton, Roelof van der Merwe, Lewis Gregory, Craig Overton, Josh Davey, Tim Groenewald and Max Waller.
Essex: Ryan ten Doeschate (c), James Foster (wk),Mohammad Amir, Ravi Bopara, Varun Chopra, Matt Dixon, Simon Harmer, Dan Lawrence, Jamie Porter, Callum Taylor, Paul Walter, Tom Westley, Adam Wheater, Ashar Zaidi.
Steven Davies (Captain Pick)