Sivir's Boomerang Blade returns to her after reaching the max range, so you can shift position to hit enemies who would otherwise have evaded it.
Try saving Spell Shield for enemy abilities that can disable you such as stuns and roots.
Ricochet resets Sivir's basic attack timer on activation, so activating this immediately after landing a normal basic attack will maximize damage output.
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 here clarify some strategic Sivir versus Rek'Sai matchup statistics that may help you distinguish the differences between the two. As an example, Sivir’s KDA ratio ([kills + assists] / deaths) of NaN is more than Rek'Sai’s KDA ratio of NaN, showing that Sivir may be more central to her team's team fighting capacity than Rek'Sai..
Sivir often has a slightly smaller longest kill spree than her foe does. On average, she receives less damage than Rek'Sai. This typically indicates different amounts of tankyness; however, it can also show that the one champion has less mobility and thus is not able to escape further harm when engaged or poked.
Both LoL champs are great. Both have their strengths, weaknesses, and counters. In the game's current meta, Sivir usually wins when trying to fight Rek'Sai, with a 52.8% win rate. Thus, Sivir makes a good counter for Rek'Sai.
While Sivir does have a higher winrate than Rek'Sai, when on opposite teams, Sivir also has a greater learning curve that makes her a more time consuming champion to develop with. You don't need to be too worried when picking Sivir into Rek'Sai.
Moreover, Sivir also has only a small amount of utility and CC, a similar amount to Rek'Sai. This makes her just as valuable during teamfights, especially when facing champions with a ton of burst damage.
While there isn't one best champion in League of Legends, in Sivir vs Rek'Sai matchups, Sivir is the better champ with a noticably higher win rate, more champion depth, and a similar amount of utility to help out your teammates during late stage team fights.
Sivir is an above average counter to Rek'Sai. Focus your tactics on increasing your gold and cs and destroying objectives. If you do that, you should be able to stand on your own as Sivir against Rek'Sai.
If you would like to learn all of the intricacies of Sivir in order to counter Rek'Sai during both the early game and mid / late game phases of League of Legends, you should keep reading to pick up a few extra lessons on this matchup. If you listen to the build and tips presented here, you should grow your win rate by a lot and be that much closer to League of Legends pro players.
Sivir usually picks up much more CS relative to Rek'Sai. Champions who typically don't take many minion kills typically don't need much CS to be effective, such as sup champs. They are able to scale well off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, typically have to have a lot of items to be effective. In either situation, try to exceed the numbers displayed here to do well.
The top items to use in your Sivir versus Rek'Sai build consist of Lord Dominik's Regards, Kraken Slayer, and Navori Quickblades. When Sivir incorporated at least these three pieces in her build, she performed much better countering Rek'Sai than with most other common builds. In fact, Sivir had an average winrate of 52.8% when playing against Rek'Sai with this counter build.
To have the highest likelihood of annihilating Rek'Sai as Sivir, you should equip the Lethal Tempo, Presence of Mind, Legend: Bloodline, Coup de Grace, Biscuit Delivery, and Magical Footwear runes from the Precision and Inspiration rune sets. Of all the runes we have analyed for Sivir vs Rek'Sai battles, this mixture of runes yielded the greatest win rate. Moreover, these runes averaged a 52.8% win rate overall.
If you would like to see Sivir x Rek'Sai tips and counter builds for a a specific player tier, feel free to choose one from the selection menu displayed above. By default, the statistics and strategies displayed are calculated using every game run with both champs.