Take advantage of Flurry by weaving in basic attacks between spell casts - this maximizes damage output and minimizes Energy loss.
Self-casting Safeguard and using Iron Will are powerful tools for killing neutral monsters (in the jungle).
Use Sonic Wave before Dragon's Rage so you can chase the target with Resonating Strike.
The stat comparisons provided here clarify several strategic Lee Sin vs. Yuumi counter stats that can help us interpret the differences and similarities between the two. Lee Sin’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Yuumi’s ratio of NaN, showing that Lee Sin may be more central to his team's team fighting capacity than Yuumi. This observation is in large part a result of the difference in kills.
Lee Sin typically has a much larger longest kill spree than his opponent does. Typically, he receives more damage than Yuumi. This commonly reflects differing health capacities, yet it can also show that the one champion has less agility and thus is unable to escape further damage when poked or engaged.
Both LoL champs are great champions. Both have their pros and cons. In the game's current meta, Lee Sin usually fairs equally well when taking on Yuumi, with a 50.8% win rate. As a result, Lee Sin makes an ok counter for Yuumi.
While Lee Sin does have a higher winrate than Yuumi, when facing one another, Lee Sin also has a much greater level of difficulty that makes him a more complex champion to pick up and master. You should be careful when picking Lee Sin into Yuumi.
Additionally, Lee Sin also has some amount of CC and other utility, a similar amount to Yuumi. This often makes her just as valuable during team fights, especially when trying to counter champions with a ton of burst damage.
While there is not one best champion for every situation in League of Legends, in Lee Sin vs Yuumi matchups, Lee Sin is the better champion with a similar win rate, more champion depth, and a similar amount of utility to help out your allies during teamfights.
Lee Sin is a decent counter to Yuumi. Focus your actions on increasing your gold and cs and destroying objectives. If you are able to do that, you should do very well as Lee Sin against Yuumi.
To truly master Lee Sin in order to counter Yuumi during both the lane and mid / late game phases of League of Legends, you should keep reading to gather a few extra tips and tricks for this matchup. If you pay attention to the build and tips displayed above, you will increase your win rate by a lot and be that much closer to League of Legends pro players.
Lee Sin typically gets more CS compared to Yuumi. Champions who on average don't acquire much CS usualy don't have to have much CS to be effective, such as supports. They are able to scale properly off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, typically require several high cost items to be effective. In either case, try to surpass the numbers reported here to do well.
The ideal items to prioritize in your Lee Sin versus Yuumi build consist of Spear of Shojin, Sundered Sky, and Eclipse. When Lee Sin included at least these three pieces in his build, he did significantly better countering Yuumi than with many other common item sets. In fact, Lee Sin had an average winrate of 50.8% battling Yuumi with this build.
To have the greatest probability of defeating Yuumi as Lee Sin, Lee Sin players should take the Conqueror, Triumph, Legend: Alacrity, Coup de Grace, Cosmic Insight, and Magical Footwear runes from the Precision and Inspiration rune sets. Out of all the rune combinations players used for Lee Sin vs Yuumi clashes, this combination of runes resulted in the best win rate. Notably, these runes gave a 50.8% winrate overall.
If you need to see Lee Sin vs Yuumi tips and matchup stats and build suggestions for a a particular division, feel free to select one from the selection menu shown above. If viewing for the first time, the stats and build suggestions shown are computed using all rounds finished with both champs.