Olaf can combine Berserker Rage, Vicious Strikes, and Ragnarok at low life to become deceptively strong.
The bonus healing granted by Vicious Strikes amplifies your Life Steal from all sources as well as heals from allies.
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 stat comparisons shown on this page show several important Olaf vs. Rek'Sai counter statistics that can help you explain the distinctions between the two. Olaf’s KDA ratio ([kills + assists] / deaths) of NaN is better than Rek'Sai’s ratio of NaN, highlighting that Olaf may be more central to his team's team fighting potential than Rek'Sai..
Olaf often has a similar longest kill spree as his foe does. On average, he receives less damage than Rek'Sai. This commonly reflects different amounts of tankyness, yet it can also hint that the champ with increased HP has less agility and thus is not able to flee from additional damage when engaged or poked.
Both LoL champions are great champions. Both have their strengths, weaknesses, and counters. In the game's current meta, Olaf usually fairs equally well when facing off against Rek'Sai, with a 49.2% win rate. Therefore, Olaf makes an ok counter to Rek'Sai.
While Olaf does have a lower winrate than Rek'Sai, when facing one another, Olaf also has a greater level of difficulty that makes him a more time consuming character to pick up and master. You still need to be cautious when picking Olaf into Rek'Sai.
Additionally, Olaf has almost no amount of CC and other utility, a similar amount to Rek'Sai. This makes her just as valuable during team fights, especially when fighting champions with a lot of burst damage.
While there isn't a single best champion overall in League of Legends, in Olaf vs Rek'Sai matchups, Rek'Sai is the better champ with a similar win rate, similar champion depth, and a similar amount of utility to help out your allied champions during team fights.
Olaf is a somewhat poor counter to Rek'Sai. You will do well by focussing your strategy on keeping up your CS and taking out objectives. If you are able to do that, you should do very well as Olaf against Rek'Sai.
To learn all of the intricacies of Olaf in order to counter Rek'Sai during both the laning and mid / late game phases of League of Legends, you should continue reading to gather a few extra tricks and insights into this matchup. If you listen to the build and tips presented above, you will grow your win rate by a lot and be that much closer to League of Legends pro players.
Olaf on average picks up much more CS as Rek'Sai. Champions who typically don't take much CS often don't have to have much CS to be effective, such as support champions. These kinds of champions are capable of scaling properly off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, typically need a lot of items to be effective. In either situation, try to do better than the numbers displayed here to do well.
The top items to use in your Olaf versus Rek'Sai build include Experimental Hexplate, Maw of Malmortius, and Death's Dance. When Olaf used at least these three items in his build, he performed significantly better vs Rek'Sai than with many other common counter builds. In fact, Olaf had an average winrate of 49.2% when countering Rek'Sai with these items in his kit.
To have the best likelihood of vanquishing Rek'Sai as Olaf, Olaf players should equip the Conqueror, Triumph, Legend: Alacrity, Last Stand, Approach Velocity, and Biscuit Delivery runes from the Precision and Inspiration rune sets. Of all the rune builds that we analyzed for Olaf vs Rek'Sai counter picks, this mixture of runes resulted in the highest win rate. Moreover, these runes averaged a 49.2% winrate overall.
By default, tips, stats, and builds on how to beat Rek'Sai as Olaf are presented for all skill levels combined. If you want to narrow the stats and builds to an individual rank, you can use the selection menu earlier in the counter matchup guide.