Cassiopeia vs Irelia at a glance
Across 244 NA and EUW ranked games in Mid lane, Cassiopeia wins 52.5% against Irelia, 5.1 points higher than the 47.4% Cassiopeia wins in that role overall.
In our library of 5 high-elo VODs (latest patch 16.19), Cassiopeia won 80% against Irelia and averaged 8.2/6.2/6.6. That is a small sample, so treat it as a starting point.
One Cassiopeia setup into Irelia takes Conqueror (Precision and Sorcery) and builds Frozen Heart, Rod of Ages and Archangel's Staff. It shows up in 1 of 5 games. The main alternative is Deathfire Touch (1 game).
Solo kills by level
A solo kill is a kill on the lane opponent with no assist. The bars over each champion above count them by champion level, from 244 NA and EUW ranked games in Mid lane; the amber marks are where that champion's kills usually fall.
Cassiopeia gets 1.7 solo kills per game against Irelia, more than the 1.2 Cassiopeia averages in mid lane, and 38% of them come before level 6, earlier than the usual 28%.
Irelia gets 2.6 solo kills per game against Cassiopeia, more than the 2.3 Irelia averages in mid lane, and 31% of them come before level 6, about the usual 28%.
How they built Cassiopeia into Irelia
Taken from the 5 VODs on this page, patch 16.19, 16.18, 16.15.
One-off setup
One-off setup
Streamers who play Cassiopeia
Every streamer in the library with ranked Cassiopeia games, most games first. Each links to their VODs on MID.GG.
Phantasm__ 
Master 
KatEvolved 
Grandmaster 
Faker Grandmaster 
velja_lol Master 
Strey_LoL Master 
Quantum Master 
agurin Master 
loltyler1 Master
Latest Cassiopeia vs Irelia games
The most recent games in this matchup, newest first.
- Defeat 2/10/4Sardoche Master · Top Patch 16.19
- Victory 8/10/11Sardoche Master · Mid Patch 16.18
- Victory 16/6/3Sardoche Master · Top Patch 16.15
- Victory 7/3/6gilius97 Master · Mid Patch 16.15
- Victory 8/2/9Kiin Grandmaster · Top Patch 14.1
