Minecraft wiki entry for Player_versus_Player, associated text: Always keep splash potions of Speed II in your hotbar. If you get a hit on your opponent, best with a knockback sword, you can throw the potion (make sure your enemy(s) get as little or none of the potions at all), and start running for your life. This can also be used against someone that loves to run. Remember! You should never jump while sprinting if you have Speed 2! (Jumping too much will cause you to not be able to take advantage of the Speed potion".