Scarlets Head Coach Nigel Davies said: "We are after a good start in Treviso. The first game is always a tough one, everyone says how much they are up for it, but so are we. It will be a hugely competitive game and the players know it's going to be tough.
"Our discipline is going to be key and I felt the run out last Friday was good for us as Exeter play a similar style of rugby to the Italians; big up front and very organised, and we were tested in these key areas which was good preparation for us.
"The Scarlets team for Treviso is one that I firmly believe is the best selection that we can make at this time and will hopefully bear out our faith as a coaching team in the great promise that a number of our players have shown already this summer and importantly, the collective progress that this group has made over during pre-season."
Scarlets: Morgan Stoddart, George North, Gareth Maule, Regan King, Andy Fenby, Rhys Priestland, Martin Roberts, Iestyn Thomas, Emyr Phillips, Deacon Manu, Lou Reed, Damian Welch, Josh Turnbull, Johnathan Edwards, Rob McCusker (capt).
Replacements: Ken Owens, Phil John, Peter Edwards, Vernon Cooper, Jonny Fa'amatuainu, Tavis Knoyle, Daniel Evans, Jon Davies.