- Win Rate
- 50.5%
- Pick Rate
- 1.7%
- Ban Rate
- 0.6%
Sion Synergies & Best Teammates
- Patch
- 26.20
- Games
- 3,418
- Lane
- All Lanes
- Tier
- All Tiers
- Last Updated
- Oct 18, 2026 UTC
- Methodology
- Data Methodology
- Author
- Dakota Chinnick
Who Sion wins with in Patch 26.20: every teammate in every role, measured against what both champions win on their own, so a strong pair is real synergy and not two strong champions.
- Best support
- Nautilus58.2% · 110 games
Sion Synergies - Patch 26.20
86 teammate pairings measuredSion (Top) wins most with Nautilus as support (58.2%, +9.4 over expected) and Sylas as jungler (56.3%, +8.8). The weakest pairing is Seraphine as support at 42.3%, 8.8 points below expected.
Best junglers for Sion
| Teammate | Win Rate | Synergy | Games |
|---|---|---|---|
 Sylas | 56.3% | +8.8 | 80 |
 Vi | 60.0% | +9.3 | 60 |
 Shaco | 57.1% | +8.3 | 63 |
 Master Yi | 56.0% | +5.2 | 109 |
 Kayn | 52.3% | +1.9 | 174 |
 Viego | 51.3% | +2.4 | 115 |
Weakest pairings
Best supports for Sion
| Teammate | Win Rate | Synergy | Games |
|---|---|---|---|
 Nautilus | 58.2% | +9.4 | 110 |
 Soraka | 63.2% | +11.4 | 57 |
 Leona | 58.1% | +5.7 | 105 |
 Lux | 52.3% | +2.9 | 174 |
 Alistar | 57.4% | +8.0 | 47 |
 Pyke | 52.2% | +2.7 | 92 |
Weakest pairings
Strongest and weakest Sion pairings
- Nautilus · support
- Sylas · jungler
Kai'Sa · ADC
Twitch · ADC
Thresh · support
Seraphine · support
Synergy is the win rate with that teammate minus the win rate the two champions would be expected to reach together from their own win rates in their roles (log5). Lists are ranked by the low end of each synergy's 95% range, so a small sample cannot lead a list on luck alone.
Sion Team Synergy Checker
Pick your teammates
Pick your teammates to see how each one moves Sion's Top win rate, and an estimate for the whole team.
An estimate: it adds each pairing's measured synergy on the odds scale and assumes the pairings are independent. Real teams also depend on the enemy draft and the players.
Help us maintain accuracy! If you notice incorrect stats, missing data, or any issues, your feedback directly improves the quality of our data for the entire community.
Sion Synergies FAQ - Patch 26.20
Who is the best support for Sion?
Nautilus. Sion (Top) wins 58.2% of 110 ranked games with Nautilus as support, 9.4 points above what the two champions win separately. Also strong: Leona, Lux.
Which champions does Sion synergize with?
This patch, Sion (Top) gets the biggest lift from Nautilus (support, 58.2%), Sylas (jungler, 56.3%), Kai'Sa (ADC, 53.7%).
Which teammates are bad with Sion?
Sion (Top) does worst next to Seraphine (support, 42.3%), Thresh (support, 43.4%), Twitch (ADC, 42.4%) — each below what the two champions win on their own.
How is synergy calculated?
From ranked solo and flex games this patch: the win rate when both champions are on the same team, minus the win rate expected from each champion's own win rate in its role. A positive number means the pair wins more together than their individual strength explains. Pairings need at least 40 games to be listed.