Cassiopeiavs Irelia
Cassiopeia vs Irelia is a decisive matchup in LoL patch 26.11. Cassiopeia wins with a 61.5% win rate (+23.1%) over Irelia based on 13 games. Irelia wins the early laning phase while Cassiopeia scales better into the late game. Below you'll find the best Cassiopeia build, runes, laning stats, and strategies for the Cassiopeia vs Irelia matchup.
Cassiopeia Matchup Breakdown
Use the dropdown to select an opponent and see a detailed breakdown of how Cassiopeia 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.
Who Wins the Cassiopeia vs Irelia Matchup?
Cassiopeia vs Irelia Matchup Summary
The Cassiopeia vs Irelia matchup is a decisive matchup in League of Legends ranked play. Based on 13 recent matches analyzed, Cassiopeia wins with a 61.5% win rate compared to Irelia's 38.5%, giving Cassiopeia a 23.1 percentage point advantage. Game phase dynamics play a critical role here: Irelia controls the early laning stage, but Cassiopeia outscales as the game goes longer. The matchup shifts dramatically depending on game length — Irelia needs to press advantages before Cassiopeia reaches their power spikes, while Cassiopeia should focus on safe farming and hitting key item breakpoints. The most significant statistical gap is in sustain, where Irelia leads by 947 HP/min — a difference that heavily influences the outcome of trades and skirmishes. Cassiopeia players can confidently pick into Irelia and play aggressively from level 1. Look to establish lane dominance early through favorable trades and zone Irelia away from CS whenever possible. Understanding these matchup dynamics is essential for champion select decisions and in-game strategy when facing this lane opponent.
Cassiopeia vs Irelia Laning Phase Breakdown
Irelia is favored during the laning phase against Cassiopeia, winning 4 out of 5 key stat categories. Irelia holds advantages in farming, damage, gold income and sustain, making them the stronger laner in this matchup.
Best Cassiopeia Build Against Irelia
Swiftmarch is the optimal boots choice against Irelia, providing the mobility and stats Cassiopeia needs most in this matchup. The top-performing core items for Cassiopeia against Irelia are Rod of Ages, Rylai's Crystal Scepter and Seraph's Embrace. This combination gives Cassiopeia 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 Irelia. Adjustments may be needed based on team compositions and game state, but this build provides the strongest foundation for the Cassiopeia vs Irelia matchup.
Early Game vs Late Game
Cassiopeia40.0%
Irelia60.0%Cassiopeia75.0%Irelia25.0%Irelia dominates the early game (first 15 minutes) with a commanding 60.0% win rate — a 20.0 percentage point lead over Cassiopeia. This lopsided early game means Irelia can dictate the pace of the lane from level 1, controlling trades, wave state, and river priority.
Cassiopeia is far superior in the late game (25+ minutes), boasting a 75.0% win rate — 50.0 points above Irelia. Extended games heavily favor Cassiopeia, whose kit and scaling make them a dominant force in team fights and objective control.
This matchup features a dramatic power shift: Irelia must aggressively press their early advantage and close out the game before Cassiopeia reaches their scaling breakpoints. If Cassiopeia 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 Cassiopeia Runes Against Irelia
Sorcery
Inspiration
Running Sorcery primary with Inspiration secondary allows Cassiopeia to press their advantage against Irelia, amplifying the strengths that make this a favorable matchup.
Cassiopeia matchup data for League of Legends patch 26.11. The table below shows Cassiopeia'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 Cassiopeia build, runes, laning stats, and early vs late game analysis for that specific matchup.
Opponent | Win Rate | Matches | CS/min | DMG/min | Gold/game | Early WR | Late WR |
|---|---|---|---|---|---|---|---|
| 47.54% | 61 | 6.3 | 835 | 12,011 | 64.0% | 36.1% | |
| 52.17% | 46 | 6.8 | 913 | 12,152 | 52.6% | 51.9% | |
| 48.65% | 37 | 6.7 | 894 | 10,720 | 47.4% | 50.0% | |
| 45.45% | 33 | 6.5 | 776 | 11,981 | 38.5% | 50.0% | |
| 46.88% | 32 | 6.6 | 858 | 10,851 | 38.1% | 63.6% | |
| 45.16% | 31 | 6.3 | 812 | 10,571 | 40.0% | 50.0% | |
| 51.61% | 31 | 7.1 | 968 | 10,348 | 54.5% | 44.4% | |
| 45.16% | 31 | 5.9 | 771 | 12,569 | 60.0% | 38.1% | |
| 64.52% | 31 | 6.7 | 921 | 11,762 | 66.7% | 62.5% | |
| 62.07% | 29 | 6.7 | 843 | 12,319 | 53.3% | 71.4% | |
| 42.86% | 28 | 6.9 | 740 | 11,662 | 42.9% | 42.9% | |
| 65.22% | 23 | 6.1 | 884 | 11,047 | 70.0% | 61.5% | |
| 34.78% | 23 | 6.1 | 787 | 10,814 | 40.0% | 30.8% | |
| 34.78% | 23 | 6.2 | 741 | 10,910 | 40.0% | 30.8% | |
| 31.82% | 22 | 6.5 | 811 | 12,229 | 50.0% | 21.4% | |
| 47.62% | 21 | 6.6 | 669 | 9,969 | 27.3% | 70.0% | |
| 66.67% | 21 | 7.0 | 956 | 12,822 | 80.0% | 62.5% | |
| 66.67% | 21 | 5.7 | 771 | 11,603 | 50.0% | 76.9% | |
| 60.00% | 20 | 6.8 | 724 | 11,518 | 50.0% | 70.0% | |
| 47.37% | 19 | 6.4 | 749 | 10,423 | 44.4% | 50.0% | |
| 63.16% | 19 | 6.4 | 893 | 11,549 | 70.0% | 55.6% | |
| 58.82% | 17 | 6.8 | 858 | 11,943 | 60.0% | 57.1% | |
| 52.94% | 17 | 6.5 | 925 | 11,500 | 37.5% | 66.7% | |
| 52.94% | 17 | 6.8 | 774 | 10,920 | 50.0% | 55.6% | |
| 82.35% | 17 | 6.7 | 891 | 11,594 | 88.9% | 75.0% | |
| 47.06% | 17 | 6.0 | 864 | 12,190 | 33.3% | 54.5% | |
| 37.50% | 16 | 6.6 | 882 | 12,072 | 40.0% | 36.4% | |
| 33.33% | 15 | 6.7 | 835 | 12,460 | 0.0% | 45.5% | |
| 66.67% | 15 | 5.7 | 815 | 12,128 | 50.0% | 77.8% | |
| 50.00% | 14 | 5.5 | 793 | 9,648 | 40.0% | 55.6% | |
| 71.43% | 14 | 6.6 | 718 | 11,583 | 80.0% | 66.7% | |
| 57.14% | 14 | 6.6 | 888 | 8,746 | 77.8% | 20.0% | |
| 42.86% | 14 | 7.0 | 965 | 13,939 | 66.7% | 25.0% | |
| 61.54% | 13 | 6.6 | 944 | 13,076 | 40.0% | 75.0% | |
| 33.33% | 12 | 7.3 | 910 | 10,994 | 40.0% | 28.6% | |
| 41.67% | 12 | 6.4 | 1,040 | 12,890 | 60.0% | 28.6% | |
| 33.33% | 12 | 6.6 | 791 | 13,559 | 100.0% | 27.3% | |
| 45.45% | 11 | 6.7 | 746 | 11,841 | 25.0% | 57.1% | |
| 18.18% | 11 | 6.2 | 786 | 12,089 | 0.0% | 28.6% | |
| 45.45% | 11 | 6.0 | 850 | 11,825 | 50.0% | 42.9% | |
| 63.64% | 11 | 5.7 | 903 | 13,107 | 66.7% | 62.5% | |
| 27.27% | 11 | 6.4 | 746 | 11,720 | 20.0% | 33.3% | |
| 36.36% | 11 | 6.5 | 960 | 14,270 | 50.0% | 28.6% | |
| 20.00% | 10 | 6.6 | 726 | 10,424 | 28.6% | 0.0% | |
| 40.00% | 10 | 6.3 | 984 | 14,522 | 50.0% | 37.5% | |
| 11.11% | 9 | 6.3 | 653 | 8,764 | 20.0% | 0.0% | |
| 44.44% | 9 | 6.9 | 872 | 11,904 | 40.0% | 50.0% | |
| 33.33% | 9 | 6.3 | 724 | 12,713 | 66.7% | 16.7% | |
| 44.44% | 9 | 6.4 | 1,278 | 12,869 | 50.0% | 42.9% | |
| 55.56% | 9 | 6.4 | 776 | 11,325 | 50.0% | 60.0% | |
| 55.56% | 9 | 6.5 | 887 | 12,685 | 0.0% | 62.5% | |
| 66.67% | 9 | 6.4 | 937 | 14,897 | 100.0% | 57.1% | |
| 25.00% | 8 | 7.3 | 802 | 13,090 | 33.3% | 20.0% | |
| 37.50% | 8 | 6.5 | 843 | 12,217 | 33.3% | 40.0% | |
| 57.14% | 7 | 5.9 | 892 | 12,356 | 66.7% | 50.0% | |
| 28.57% | 7 | 7.2 | 924 | 14,448 | 0.0% | 33.3% | |
| 42.86% | 7 | 6.2 | 771 | 11,594 | 50.0% | 33.3% | |
| 14.29% | 7 | 6.8 | 916 | 11,035 | 0.0% | 25.0% | |
| 71.43% | 7 | 6.0 | 860 | 11,651 | 100.0% | 50.0% | |
| 28.57% | 7 | 5.9 | 738 | 8,495 | 33.3% | 0.0% | |
| 66.67% | 6 | 6.5 | 926 | 13,985 | 0.0% | 100.0% | |
| 66.67% | 6 | 6.8 | 873 | 13,102 | 100.0% | 50.0% | |
| 33.33% | 6 | 6.8 | 635 | 10,697 | 50.0% | 25.0% | |
| 50.00% | 6 | 6.2 | 765 | 12,039 | 66.7% | 33.3% | |
| 50.00% | 6 | 6.7 | 653 | 10,177 | 66.7% | 33.3% | |
| 50.00% | 6 | 6.5 | 998 | 12,680 | 100.0% | 25.0% | |
| 60.00% | 5 | 6.3 | 675 | 11,352 | 50.0% | 66.7% | |
| 40.00% | 5 | 7.4 | 1,034 | 13,862 | 50.0% | 33.3% | |
| 20.00% | 5 | 8.1 | 765 | 11,226 | 33.3% | 0.0% | |
| 40.00% | 5 | 6.0 | 1,365 | 11,712 | 50.0% | 33.3% | |
| 40.00% | 5 | 5.8 | 725 | 8,657 | 100.0% | 25.0% | |
| 80.00% | 5 | 5.5 | 684 | 10,127 | 100.0% | 50.0% | |
| 20.00% | 5 | 7.3 | 1,044 | 10,500 | 33.3% | 0.0% | |
| 80.00% | 5 | 6.9 | 879 | 10,244 | 100.0% | 66.7% | |
| 20.00% | 5 | 6.2 | 783 | 9,079 | 50.0% | 0.0% | |
| 60.00% | 5 | 7.8 | 896 | 13,847 | 100.0% | 50.0% | |
| 40.00% | 5 | 5.0 | 714 | 11,229 | 0.0% | 50.0% | |
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Cassiopeia vs Irelia - Frequently Asked Questions
How does Cassiopeia do against Irelia in League of Legends?
Cassiopeia wins the Cassiopeia vs Irelia matchup with a 61.5% win rate compared to Irelia's 38.5%, a 23.1 percentage point difference. This data is based on 13 recent ranked games in patch 26.11.
How does Cassiopeia do against Irelia in the early game?
In the early game, Irelia has the advantage against Cassiopeia with a 60.0% win rate versus 40.0%. Irelia players should look to press their lane advantage through aggressive trades and wave control during the first 15 minutes.
How does Cassiopeia do against Irelia in the late game?
In the late game, Cassiopeia takes over the Cassiopeia vs Irelia matchup with a 75.0% win rate compared to 25.0%. Cassiopeia scales better into team fights and objective contests after 25 minutes.
Who wins the Cassiopeia vs Irelia matchup?
Cassiopeia wins the matchup against Irelia with a 61.5% win rate in League of Legends patch 26.11. The 23.1 percentage point advantage means Cassiopeia is significantly favored in this lane matchup based on 13 games analyzed.
What is the best Cassiopeia build against Irelia?
The best Cassiopeia build against Irelia includes Rod of Ages, Rylai's Crystal Scepter, Seraph's Embrace with Swiftmarch. 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 Cassiopeia runes against Irelia?
The best Cassiopeia runes against Irelia use the Sorcery primary tree with Inspiration secondary. This rune setup achieves a 100.0% win rate in the Cassiopeia vs Irelia matchup. See the full rune breakdown in the matchup comparison above.
Does Cassiopeia counter Irelia?
Yes, Cassiopeia has a favorable matchup against Irelia with a 61.5% win rate. Cassiopeia strongly counters Irelia in lane based on current patch 26.11 data.
How do I play Cassiopeia against Irelia?
When playing Cassiopeia against Irelia, leverage your statistical advantages by trading aggressively during favorable windows. Play safe early and scale into your power spikes where you outperform Irelia. Build the recommended items and runes for this specific matchup for the best results.