Riven lacks a source of healing or strong defense and must compensate with burst combos. Lead into fights with Broken Wings and Ki Burst, while using Valor to escape and absorb counter-harass.
Riven's Broken Wings locks onto the champion your cursor is over at the time of cast. If you want to move past your opponent, make sure that your cursor is past your opponent as well.
When Rek'Sai is near, she can see the position of you and your allies, but only if you're moving.
If you see one of Rek'Sai's tunnels, briefly stand on one of the entrances to destroy it.
Rek'Sai's Furious Bite gains damage as she builds Fury. Be very careful around her when her Fury is full.
The stats shown on this page highlight several valuable Riven vs. Rek'Sai matchup stats that may help us grasp the differences between the pair. Riven’s KDA ratio ([kills + assists] / deaths) of NaN is more than Rek'Sai’s ratio of NaN, highlighting that Riven may be more central to her team's team fighting potential than Rek'Sai..
Riven typically has a similar longest kill spree as her counter does. On average, she takes less damage than Rek'Sai. This often reflects differing health capacities, yet it can also illustrate that the one champ has less agility and thus is unable to flee from additional damage when engaged or poked.
Both LoL champs are great champions. Both have their strengths, weaknesses, and counters. In League's current meta, Riven usually wins when facing off against Rek'Sai, with a 51.6% win rate. Therefore, Riven makes a good counter to Rek'Sai.
While Riven does have a higher winrate than Rek'Sai, when they face off with one another, Riven also has a much greater learning curve that makes her a more challenging champ to pick up and master. You still need to be cautious when picking Riven into Rek'Saias her relative depth means you may not be able to unleash her full potential without a significant amount of practice beforehand.
Furthermore, Riven also has some amount of utility and CC, a similar amount to Rek'Sai. This makes her just as valuable during teamfights, especially when trying to counter champions with a ton of burst damage.
While there isn't a single best champion for every situation in League of Legends, in Riven vs Rek'Sai matchups, Riven is the better champion with a higher win rate, more champion depth, and a similar amount of utility to help out your teammates during team fights.
Riven is a decent counter for Rek'Sai. Focus your play on increasing your gold and cs and destroying objectives. If you are able to do that, you should be able to stand on your own as Riven against Rek'Sai.
If you would like to learn all of the intricacies of Riven to counter Rek'Sai during both the laning and mid / late game phases of League of Legends, you should continue reading to learn a few extra tricks and insights into this matchup. If you pay attention to the build and suggestions displayed here, you should increase your win rate significantly and be closer to League of Legends pro players.
Riven on average racks up much more CS compared to Rek'Sai. Champions who on average don't earn much CS usualy don't need much CS to be valuable teammates, such as sup champs. They are capable of scaling properly off of their abilities and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, typically have to have a lot of items to be effective. In either case, try to do better than the numbers shown on this page to do well.
The most crucial items to have in your Riven versus Rek'Sai build include Spear of Shojin, Sundered Sky, and Eclipse. When Riven combined at least these three pieces in her build, she performed a lot better vs. Rek'Sai than with most other common builds. In fact, Riven boasted an average winrate of 51.6% battling Rek'Sai with these items in her kit.
To have the highest probability of crushing Rek'Sai as Riven, Riven players should use the Conqueror, Triumph, Legend: Tenacity, Last Stand, Nimbus Cloak, and Transcendence runes from the Precision and Sorcery rune sets. Out of all the rune combinations players chose for Riven vs Rek'Sai battles, this combination of runes resulted in the best win rate. Notably, these runes provided a 51.6% winrate overall.
If you would like to get Riven versus Rek'Sai tips and matchup stats and build suggestions for a a particular rank, feel free to choose one from the selection menu provided above. By default, the statistics and build suggestions displayed are computed using every game run with these champions.