Can someone help me?

I need help beating the Sinnoh Leauge. Can someone give some suggestions how to make my team and there move sets better?

Torterra Lv. 58CutGiga DrainEarthquakeLeaf Storm

Graveler Lv. 58StrengthEarthquakeExplosionRock Climb

Jirachi Lv. 58PsychicZen HeadbuttRefreshDraco Meteor

Staraptor Lv. 59Brave BirdRoostFlyClose Combat

Dialga Lv. 58Metal ClawAncient PowerDragon ClawRoar of Time

Gastrodon Lv. 59WaterfallRock SmashSurfBody Slam

I probably am going to level them up more and probably evolve Graveler into Golem but whatever suggestions you have for now would be great.

Pleaselog inorregisterto add a comment.

Suckish Moves. No Offense.

Torterra: Stone Edge(Covers Aaron), Leaf Storm(For Bertha), Earthquake(!), and Razor Leaf(more for Bertha) or Crunch(for Lucian).

Golem: Stone Edge(STAB), Earthquake(STAB), Explosion(When all else fails), and Double Edge(If He Has Rock Head Ability, if not, use strength).

Jirachi: Flash Cannon(STAB), Draco Meteor(power), Psychic(STAB), and anything else you like. Shadow Ball Mybe, for lucian.

Staraptors good.

Give Diagla Flash Cannon, Dragon Pulse, Ice Beam, and Psychic.

Gastradons ok.