Valkyrie can be used defensively as well, so try using it for a quick escape.
Phosphorus Bomb can be used to reveal enemy units that might be hiding in a nearby patch of brush.
Corki can continue to attack while using Gatling Gun. Maximizing Gatling Gun is key to mastering Corki.
If Master Yi tries to farm with Alpha Strike, hit him a few times so he has to use mana with Meditate to heal.
Although Master Yi cannot be slowed while using Highlander, other disables can stop him in his tracks.
Meditate is an effective method of healing damage over time, but Master Yi is susceptible to coordinated team ganks early in the game.
The stat comparisons shown here show several vital Corki against Master Yi matchup stats that can help us appreciate the differences between this set of champs. For instance, Corki’s KDA ratio ([kills + assists] / deaths) of NaN is more than Master Yi’s KDA ratio of NaN, demonstrating that Corki may be more central to his team's team fighting potential than Master Yi..
Corki usually has a slightly smaller longest killing spree than his foe does. On average, he receives less damage than Master Yi. This is usually reflective of differing health capacities, but it can also illustrate that the champ with more HP has less agility and thus is not able to escape further damage when poked or engaged.
Both LoL champions are great champions. Both champs have their pros and cons. In League's current meta, Corki usually loses when taking on Master Yi, with a 47.0% win rate. Therefore, Corki makes a poor counter to Master Yi.
While Corki does have a lower winrate than Master Yi, when they face off with one another, Corki also has a greater level of difficulty that makes him a more difficult champion to learn. You should be very concerned when picking Corki into Master Yi.
Additionally, Corki also has only a small amount of utility and CC, a similar amount to Master Yi. This makes her just as valuable during team fights, especially when facing champions with a lot of burst damage.
While there isn't a single best champion in League of Legends, in Corki vs Master Yi matchups, Master Yi is the better champ with a much lower win rate, more champion depth, and a similar amount of utility to help out your allies during teamfights.
Corki is a terribly counter for Master Yi. Focus your gameplay on keeping up your CS and destroying objectives. If you do that, you should hold your own as Corki against Master Yi.
If you would like to learn all of the intricacies of Corki to counter Master Yi during both the early game and mid / late game phases of League of Legends, you should keep reading to pick up a few extra tips and tricks for this matchup. If you listen to the build and tips displayed above, you should grow your win rate by a lot and be that much closer to League of Legends pro players.
Corki often racks up much more CS as Master Yi. Champions who on average don't earn many minion kills often don't need much CS to be effective, such as support champions. They are able to scale well off of their abilities and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, usually need many items to be effective. In either case, try to do better than the values reported here to do well.
The most important items to have in your Corki versus Master Yi build include Muramana, Trinity Force, and Rapid Firecannon. When Corki bought at least these three pieces in his build, he performed much better vs Master Yi than with many other typical item sets. In fact, Corki had an average winrate of 47.0% when countering Master Yi with this counter build.
To have the best probability of beating Master Yi as Corki, you should equip the First Strike, Magical Footwear, Biscuit Delivery, Cosmic Insight, Taste of Blood, and Ultimate Hunter runes from the Inspiration and Domination rune sets. Of all the runes players chose for Corki vs Master Yi battles, this combo of runes yielded the best win rate. Moreover, these runes gave a 47.0% win rate overall.
By default, tips, stats, and builds on how to beat Master Yi as Corki are displayed for all ranked divisions combined. If you want to scope the statistics and builds to an individual division, you should use the selection menu at the top of this page.