Don't be afraid to get into Sha Lin's face as a Fernando in a 1v1 situation. Fernando's burn CC is not cancelled by Sha Lin's Withdraw, and with the Scorch legendary you can down him in no time.
Some Fernandos know how to chain fireball with their dash ability to deal massive damage to groups; don't group together when trying to fight an aggressive Fernando so he has a harder time picking you off!
Many Bomb King players lay "traps" throughout the maps. When you see sticky bombs on the floor or on walls, shoot them to destroy them! They take no more than 5 bullets to destroy and can save a teammate from walking into it and getting blown up.