Don't have Telegram yet? Try it now!
http://pokemontrainertips.com/pokemon-go-what-is-the-chance-of-receiving-a-sinnoh-stone-or-rare-candy-in-a-leader-or-trainer-pvp-battle/
pokemon go - What is the prospect of receiving a Sinnoh Stone or Rare Candy in a pacesetter or coach (PvP) battle?