Against Renekton as Udyr? You should outdamage him at level 2. Just stay safe and overextend. You should win the lane fairly easily if you play conservatively. You just gotta play it as it comes, there's no real guide to laning against renekton with udyr.
Harass him when his fury is low, use turtle to sustain up, and keep track of his cooldowns so you know when it's safe to go in.
Importantly, you can't let him initiate a trade. If he initiates the trade, you will not win it. Cloth + 5 might be a good idea. It's important to not waste your mana.
Last edited by Hyde; Apr 22, 2014 at 11:45 PM.