Sejuani - League of Legends Champion
Win Rate
51.0%
Pick Rate
1.4%

Sejuanivs Sion

ATank
Patch26.7
Matches949,984
LaneAll Lanes
TierAll Tiers
Last UpdatedApr 21, 2026
MethodologyData Methodology

Sejuani vs Sion is a very close matchup in LoL patch 26.7. Sejuani wins with a 50.0% win rate (+0.0%) over Sion based on 6 games. Sion wins the early laning phase while Sejuani scales better into the late game. Below you'll find the best Sejuani build, runes, laning stats, and strategies for the Sejuani vs Sion matchup.

Sejuani Matchup Breakdown

Use the dropdown to select an opponent and see a detailed breakdown of how Sejuani performs against them. You'll get head-to-head win rates, laning stats, the best build and runes for the matchup, and early vs late game analysis — all based on real ranked data.

Compare against an opponent
Sion - 50.0% win rateSion(50.0%)
Sejuani - 50.0% win rate in this matchup
Sejuani
50.0% WR
VS
Sion vs Sejuani matchup - 50.0% win rate
Sion
50.0% WR

Who Wins the Sejuani vs Sion Matchup?

Sejuani wins the Sejuani vs Sion matchup
Winner
Sejuani
Matches: 6
50.0%
Win Rate
50.0%
2.0
CS / min
3.0
731
DMG / min
779
11,691
Gold / game
12,822
404
Heal / min
355
1,454
DMG Mitigated / min
1,955
1.3
CC / min
1.4
0.0%
Early Game WR
100.0%
100.0%
Late Game WR
0.0%

Sejuani vs Sion Matchup Summary

The Sejuani vs Sion matchup is essentially a coin-flip matchup in League of Legends ranked play. Based on 6 recent matches analyzed, Sejuani wins with a 50.0% win rate compared to Sion's 50.0%, giving Sejuani a 0.0 percentage point advantage. Game phase dynamics play a critical role here: Sion controls the early laning stage, but Sejuani outscales as the game goes longer. The matchup shifts dramatically depending on game length — Sion needs to press advantages before Sejuani reaches their power spikes, while Sejuani should focus on safe farming and hitting key item breakpoints. The most significant statistical gap is in CS, where Sion leads by 1.0 CS/min — a difference that heavily influences the outcome of trades and skirmishes. Sejuani has a statistical edge, but the margin is close enough that respecting Sion's strengths is important. Trade when cooldowns are favorable, track the enemy jungler, and build toward your strongest item spikes to convert the slight advantage into a decisive lead. Understanding these matchup dynamics is essential for champion select decisions and in-game strategy when facing this lane opponent.

Sejuani vs Sion Laning Phase Breakdown

Sion wins the laning phase against Sejuani in League of Legends

Sion is favored during the laning phase against Sejuani, winning 5 out of 5 key stat categories. Sion holds advantages in farming, damage, gold income, crowd control and sustain, making them the stronger laner in this matchup.

Farming
2.0Sejuani
3.0Sion
Sion significantly out-farms Sejuani by 1.0 CS per minute, accumulating an estimated 14 CS lead by mid game. This substantial farming gap gives Sion a major gold advantage and earlier item completions. Sejuani players should prioritize wave management techniques like freezing near tower and using abilities efficiently to minimize the deficit.
Damage
731Sejuani
779Sion
Sion deals 48 more champion damage per minute than Sejuani. While noticeable in extended trades, this gap can be offset by Sejuani choosing favorable fight windows, such as engaging when Sion's key abilities are on cooldown or trading immediately after dodging a skillshot.
Economy
11,691Sejuani
12,822Sion
Sion generates a commanding 1,131 more gold per game than Sejuani. This substantial economic advantage means Sion consistently reaches key item breakpoints earlier, creating a compounding lead that grows throughout the game. Sejuani should focus on cost-effective item choices and avoid unnecessary deaths to prevent falling further behind.
Utility
1.3Sejuani
1.4Sion
Both Sejuani and Sion provide similar amounts of crowd control (0.1s/min difference), meaning neither has a significant advantage in locking down opponents for ganks or team fights. Lane ganks are equally effective for both sides.
Sustain
1,857Sejuani
2,311Sion
Sion vastly out-sustains Sejuani, healing and mitigating 453 more damage per minute. This massive durability gap means Sion can absorb significant punishment and remain in lane while Sejuani is forced to recall. Building grievous wounds early is essential for Sejuani, and focusing on burst trade patterns rather than sustained fights is critical.

Best Sejuani Build Against Sion

Plated Steelcaps is the optimal boots choice against Sion, providing the mobility and stats Sejuani needs most in this matchup. The top-performing core items for Sejuani against Sion are Heartsteel, Thornmail and Unending Despair. This combination gives Sejuani an effective balance of damage, survivability, and utility for the matchup. This build performs exceptionally well, achieving a 100.0% win rate across 2 games — well above average and making it the top item path against Sion. Adjustments may be needed based on team compositions and game state, but this build provides the strongest foundation for the Sejuani vs Sion matchup.

Early Game vs Late Game

Early Game
Sion
100.0%
+100.0% advantage
Sejuani early game win rateSejuani0.0%
Sion early game win rateSion100.0%
Late Game
Sejuani
100.0%
+100.0% advantage
Sejuani late game win rateSejuani100.0%
Sion late game win rateSion0.0%

Sion dominates the early game (first 15 minutes) with a commanding 100.0% win rate — a 100.0 percentage point lead over Sejuani. This lopsided early game means Sion can dictate the pace of the lane from level 1, controlling trades, wave state, and river priority.

Sejuani is far superior in the late game (25+ minutes), boasting a 100.0% win rate — 100.0 points above Sion. Extended games heavily favor Sejuani, whose kit and scaling make them a dominant force in team fights and objective control.

This matchup features a dramatic power shift: Sion must aggressively press their early advantage and close out the game before Sejuani reaches their scaling breakpoints. If Sejuani survives the laning phase without falling too far behind, the matchup flips in their favor. Dragon and Rift Herald control are pivotal — the team that secures early objectives can snowball or buy time to scale.

Best Sejuani Runes Against Sion

Resolve rune tree - Sejuani primary runes vs SionResolve
Grasp of the Undying - best Sejuani rune vs SionDemolish - best Sejuani rune vs SionSecond Wind - best Sejuani rune vs SionOvergrowth - best Sejuani rune vs Sion
Sorcery rune tree - Sejuani secondary runes vs SionSorcery
Manaflow Band - best Sejuani rune vs SionScorch - best Sejuani rune vs Sion
100.0% WR

The Resolve primary with Sorcery secondary combination helps Sejuani maximize their potential in this closely contested matchup, providing the right mix of offensive and defensive tools to edge out Sion.


Sejuani matchup data for League of Legends patch 26.7. The table below shows Sejuani's win rate, gold difference, and performance stats against every champion in the current meta. Click any champion name to see a detailed head-to-head breakdown including the best Sejuani build, runes, laning stats, and early vs late game analysis for that specific matchup.

Sejuani matchup win rates and stats in League of Legends patch 26.7
Opponent
Win Rate
Matches
CS/min
DMG/min
Gold/game
Early WR
Late WR
50.00%660.955811,22240.7%56.4%
35.94%641.156310,83034.4%37.5%
51.67%601.066311,69050.0%52.9%
61.11%541.053311,82166.7%57.6%
44.68%471.258711,73222.7%64.0%
45.65%461.255711,66047.6%44.0%
39.02%411.058512,85046.1%35.7%
51.28%390.954311,00855.6%47.6%
63.89%361.361112,28858.3%66.7%
50.00%341.058312,21250.0%50.0%
61.29%311.672511,30250.0%70.6%
41.38%291.069812,37722.2%50.0%
39.29%281.556912,56544.4%36.8%
55.56%270.951413,08385.7%45.0%
56.00%251.062713,49650.0%57.9%
41.67%241.966911,94050.0%35.7%
40.91%221.056111,30855.6%30.8%
55.00%200.858311,51550.0%60.0%
45.00%201.066612,73137.5%50.0%
40.00%201.057911,86750.0%33.3%
55.00%201.166612,08550.0%56.3%
52.63%191.759610,84536.4%75.0%
73.68%191.866012,710100.0%54.5%
61.11%180.754111,18458.3%66.7%
50.00%182.968610,48833.3%66.7%
77.78%182.165112,14271.4%81.8%
47.06%172.466712,57450.0%45.5%
70.59%176.580611,52257.1%80.0%
70.59%171.369713,16671.4%70.0%
52.94%173.276011,09455.6%50.0%
56.25%161.070312,53666.7%50.0%
62.50%161.257511,14680.0%54.5%
68.75%160.948212,05071.4%66.7%
40.00%153.060212,23337.5%42.9%
57.14%141.455911,25071.4%42.9%
50.00%143.46109,37244.4%60.0%
46.15%130.956611,26357.1%33.3%
46.15%131.063312,83160.0%37.5%
25.00%123.172211,37140.0%14.3%
50.00%122.769012,74633.3%55.6%
63.64%111.073713,06975.0%57.1%
27.27%113.073110,06633.3%20.0%
36.36%111.371113,57350.0%28.6%
45.45%111.165714,72650.0%42.9%
50.00%105.575511,36533.3%75.0%
60.00%101.154710,52750.0%66.7%
70.00%101.55139,84962.5%100.0%
40.00%101.156712,46933.3%42.9%
55.56%94.976611,92325.0%80.0%
11.11%94.278111,88325.0%0.0%
77.78%93.075112,38950.0%85.7%
77.78%90.956812,318100.0%71.4%
77.78%90.937611,61575.0%80.0%
77.78%91.170413,219100.0%66.7%
37.50%85.468411,44675.0%0.0%
75.00%83.15889,72366.7%100.0%
14.29%71.24487,28425.0%0.0%
42.86%76.27279,54250.0%33.3%
28.57%71.659410,2930.0%40.0%
28.57%70.869113,472100.0%16.7%
57.14%71.661513,0250.0%57.1%
28.57%71.154410,29433.3%0.0%
42.86%73.054610,31550.0%33.3%
66.67%62.871512,18866.7%66.7%
66.67%63.846410,551100.0%0.0%
50.00%62.073111,6910.0%100.0%
33.33%64.269910,7560.0%50.0%
50.00%61.663813,7210.0%75.0%
66.67%62.867912,21150.0%75.0%
33.33%63.271811,1080.0%66.7%
50.00%66.91,00711,32166.7%33.3%
66.67%65.47799,57633.3%100.0%
66.67%66.699811,402100.0%33.3%
50.00%66.56327,73260.0%0.0%
20.00%56.77327,9020.0%33.3%
60.00%51.069713,7970.0%75.0%
20.00%52.444210,08420.0%0.0%
40.00%54.566312,4400.0%50.0%
20.00%54.774912,1250.0%33.3%

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Sejuani vs Sion - Frequently Asked Questions

How does Sejuani do against Sion in League of Legends?

Sejuani wins the Sejuani vs Sion matchup with a 50.0% win rate compared to Sion's 50.0%, a 0.0 percentage point difference. This data is based on 6 recent ranked games in patch 26.7.

How does Sejuani do against Sion in the early game?

In the early game, Sion has the advantage against Sejuani with a 100.0% win rate versus 0.0%. Sion players should look to press their lane advantage through aggressive trades and wave control during the first 15 minutes.

How does Sejuani do against Sion in the late game?

In the late game, Sejuani takes over the Sejuani vs Sion matchup with a 100.0% win rate compared to 0.0%. Sejuani scales better into team fights and objective contests after 25 minutes.

Who wins the Sejuani vs Sion matchup?

Sejuani wins the matchup against Sion with a 50.0% win rate in League of Legends patch 26.7. The 0.0 percentage point advantage means Sejuani is slightly favored in this lane matchup based on 6 games analyzed.

What is the best Sejuani build against Sion?

The best Sejuani build against Sion includes Heartsteel, Thornmail, Unending Despair with Plated Steelcaps. This build achieves a 100.0% win rate in the matchup. Check the matchup breakdown above for the full item path and build order.

What are the best Sejuani runes against Sion?

The best Sejuani runes against Sion use the Resolve primary tree with Sorcery secondary. This rune setup achieves a 100.0% win rate in the Sejuani vs Sion matchup. See the full rune breakdown in the matchup comparison above.

Does Sejuani counter Sion?

Yes, Sejuani has a favorable matchup against Sion with a 50.0% win rate. Sejuani slightly edges out Sion in lane based on current patch 26.7 data.

How do I play Sejuani against Sion?

When playing Sejuani against Sion, leverage your statistical advantages by trading aggressively during favorable windows. Play safe early and scale into your power spikes where you outperform Sion. Build the recommended items and runes for this specific matchup for the best results.