Kai'Sa

The figures worth remembering, read straight from the data — no editorial picking.

• Played almost exclusively Bot (98.6% of its games).
• Peak popularity in 2021: 840 games, 52.3% win rate.
• Games featuring it run 1.8 min shorter than average (32m 03s against 33m 53s).
• Best duo: alongside Pyke, 65.1% over 43 games (+13.5 pts against its own average).
• Hardest matchup: against Smolder in Bot, 41.4% over 29 duels.
• Longest win streak: 10, from July 9, 2025 to July 26, 2025.
• The team that played it most is FunPlus Phoenix (115 games, 57.4%).
• Strongest on it: Ruler at 1833 domination rating over 70 games on Kai'Sa.

How this champion performs in the current season, independently of its past. The sections below cover the full history and say so.

176 games this season, 52.8% win rate, 53rd most played of the 155 champions picked in 2026. Win rate down 0.1 points against 2025.

Teams that played it most · 2026

Team	Games	WR
Team Secret Whales	11	90.9%
Weibo Gaming	10	50%
CTBC Flying Oyster	8	37.5%
GIANTX	8	87.5%
Disguised	8	25%
Movistar KOI	8	75%

How far each player outplays his direct opponent when he picks this champion — not his career rating. Same 1500 scale, games on this champion only (20+).

1. 1 Ruler 1833 +90 Active #2 · #1 Bot · 70 games · 61.4%
2. 2 Viper 1759 +55 Active #4 · #2 Bot · 110 games · 62.7%
3. 3 GALA 1703 +127 Active #42 · #10 Bot · 124 games · 67.7%
4. 4 Peyz 1671 +40 Active #19 · #4 Bot · 39 games · 71.8%
5. 5 Aiming 1664 +71 Active #34 · #8 Bot · 80 games · 52.5%
6. 6 Upset 1662 +123 Active #71 · #14 Bot · 69 games · 59.4%
7. 7 JackeyLove 1652 -12 Active #8 · #3 Bot · 81 games · 67.9%
8. 8 Uzi 1646 -9 · 51 games · 62.7%
9. 9 Betty 1636 +116 Active #98 · #18 Bot · 71 games · 54.9%
10. 10 Deft 1625 -13 · 71 games · 62%
11. 11 Elk 1605 -4 Active #27 · #6 Bot · 73 games · 61.6%
12. 12 Rekkles 1593 -10 Active #31 · #7 Bot · 27 games · 48.1%

All seasons combined — the current-season read is further up. How this champion is actually used: which role, which side of the map, and whether it shows up more in playoffs than in regular season.

Bars show pick volume, the line shows win rate. The dashed line marks 50%.

Across all seasons (2018–2026): a single season does not supply enough shared games. Allies seen at least 25 times alongside Kai'Sa. The gap is measured against its own 51.6% average, not against 50%. The Role column is the one held by the ally.

Strongest

Ally	Role	Games	WR	Gap
Pyke	Support	43	65.1%	+13.5
Tahm Kench	Support	67	64.2%	+12.6
Lucian	Mid	72	62.5%	+10.9
Ivern	Jungle	38	60.5%	+8.9
Poppy	Jungle	138	60.1%	+8.5
Neeko	Support	231	59.7%	+8.1
Yone	Mid	119	59.7%	+8.1
Fiora	Top	32	59.4%	+7.8

Weakest

Ally	Role	Games	WR	Gap
Seraphine	Mid	34	26.5%	-25.1
Mordekaiser	Top	29	34.5%	-17.1
Blitzcrank	Support	47	38.3%	-13.3
Syndra	Mid	165	40%	-11.6
Sett	Support	172	42.4%	-9.2
Aurora	Mid	80	42.5%	-9.1
Karma	Mid	75	42.7%	-8.9
Dr. Mundo	Top	37	43.2%	-8.4

Across all seasons (2018–2026): direct opposition in the same role, over at least 25 duels.

Favourable

Opponent	Role	Duels	WR	Gap
Caitlyn	Bot	49	69.4%	+17.8
Kog'Maw	Bot	26	61.5%	+9.9
Ziggs	Bot	44	61.4%	+9.8
Corki	Bot	95	60%	+8.4
Jhin	Bot	106	59.4%	+7.8
Samira	Bot	101	58.4%	+6.8
Ezreal	Bot	594	54%	+2.4
Lucian	Bot	175	53.7%	+2.1

Unfavourable

Opponent	Role	Duels	WR	Gap
Smolder	Bot	29	41.4%	-10.2
Jinx	Bot	94	41.5%	-10.1
Draven	Bot	35	42.9%	-8.7
Yunara	Bot	56	46.4%	-5.2
Vayne	Bot	81	46.9%	-4.7
Kalista	Bot	106	47.2%	-4.4
Zeri	Bot	147	47.6%	-4
Aphelios	Bot	204	48.5%	-3.1

All seasons combined, so defunct leagues show up too — EU LCS and NA LCS became the LEC and the LCS. Where this champion is played, and by whom: regional habits are often stronger than any global trend.

By league

• LPL 1,205 · 52.2%
• LCK 730 · 48.8%
• LEC 385 · 54%
• Worlds 365 · 52.3%
• LCS 326 · 50.9%
• PCS 234 · 54.3%
• MSI 154 · 53.2%
• LMS 151 · 41.7%

Teams that played it most

Team	Games	WR
FPFunPlus Phoenix	115	57.4%
Royal Never Give Up	115	64.3%
EDward Gaming	112	58.9%
Hanwha Life Esports	102	55.9%
Invictus Gaming	94	63.8%
JD Gaming	90	63.3%
Team WE	87	49.4%
Oh My God	83	43.4%
Bilibili Gaming	80	50%
G2 Esports	78	62.8%

Short answers meant to stand on their own, out of context.

What is the best duo with Kai'Sa?

Pyke as Support: 65.1% wins over 43 games together, +13.5 points against Kai'Sa's 51.6% average.

Which champion counters Kai'Sa in Bot?

Smolder in Bot: Kai'Sa only wins 41.4% of their 29 direct duels, -10.2 points below its average.

Which lane does Kai'Sa play in pro?

Mainly Bot, which accounts for 98.6% of its 3,818 major-league games, with a 51.6% win rate.

Is Kai'Sa good in professional play?

Over 3,818 major-league games since 2018, Kai'Sa holds a 51.6% win rate. Its most played season was 2021 with 840 games, and it was last picked on September 19, 2026.

Longest consecutive runs of wins and losses, with the dates that bound them. Long runs come as much from schedule as from form.

Record	Value
Longest win streak	10 · July 9, 2025 → July 26, 2025
Longest loss streak	12 · June 25, 2024 → June 28, 2024
Average game length	32m 03s · 33m 53s
Longest game	60m 04s · CTBC Flying Oyster vs Deep Cross Gaming
Shortest game	17m 07s · FPFunPlus Phoenix vs RWRogue Warriors