LeBlanc

Ziggs

Try to play closer to ziggs to get off poke. Don't take damage for free. Don't overextend in this lane EVER or He will take 70% of your health and their jungler will probably finish you off if you're not already dead. He outranges you, I'd just try to keep the wave in the middle of the lane and hurt him when you can.

Yasuo

Play safe. Step all the way back when he has q up. He'll usually get annoyed and start dashing all the way in to try to hit a tornado on repeat. Just keep the wave in the middle of the lane. Try to keep your ball on the minion wave to poke him when he dashes in. Auto him to proc his shield and wait before trading. Don't use q into his windwall, but if your ball is past his windwall you can still poke him with it.

Pantheon

Just be smart here. He will kill you very easily if you ever let him engage on you. Play very back, don't let the wave crash into your tower, and poke him with qw when you can/have mana. Watch for his roams, PING IF HE GOES MISSING LVL 6 AND ON. If you're hitting tower when he's backed, maaaake sure you don't overstay because he will ult in and kill you asap.

Katarina

lvl 1 you can trade with her. Try to bait her to walking towards dagger while dodging the spin. q and auto on her way out. After that, put the ball on her dagger when you feel she might dash towards it. W if she does. If she goes for you, immediately ew and back off. Use ult to get her out of her ult channel or to get her off of you. Only ult offensively if she has no minions behind her.