Whenever Blitz starts the round with Zephyr, the item CC's someone and then Blitzcrank runs into the enemy team with full mana instead of using his grip ability. He then melee's someone for a few seconds before using his grip.
As far as I know. he should switch targets once someone is Zephyred and then grip someone else. He should stay in the spot he spawns in, Zephyr an enemy unit, then switch target and grip an enemy unit instead of running into the other team to melee with full mana.