Good game.
Might want to change a few of your Pokemons moves and check there EV's/IV's/Items as the damage they did was very poor, and some of the moves werent competitive at all.
Like on Mesprit Swift and Confusion arent very good moves at all and are both outclassed by other moves...
Change his Moveset to...
Psychic / Grass Knot / U-Turn / Stealth Rock
Turns him into an anti lead, while still getting rocks up. :)
And on Sandslash use Stone Edge not Rollout, Rollout is a terrible move.
And on Scyther change X-Scissor to Bug Bite, thats if your ability is Technician.
With Technician Bug Bite is stronger then X-Scissor.