Head-to-head Dota 2 7.41e win rate from ranked matches.
In Dota 2 7.41e, Io wins the Mars vs Io matchup: Io beats Mars in 54.80% of 396 ranked matches.
Catching someone with Arena of Blood seems like a sure kill, but Io makes the whole thing feel pointless. The movement speed from Tether helps Io's partner dodge Spear of Mars or reposition away from the Arena walls. Even if Mars lands a perfect initiation on a core, Io can simply use Relocate to pull that hero to safety, completely negating Mars's biggest teamfight spell. This dynamic forces Mars into a frustrating position where his primary strength is consistently undone. Io doesn't need to fight Mars head-on; he only needs to exist near the fight to dismantle Mars's entire strategy.
How the matchup shifts across skill brackets — Mars's win rate against Io in recent ranked matches, split by average match rank. Ranks with too few recent matches are omitted. These rows use the last 30 days of quality-filtered ranked matches, all patches in that span combined — a wider window than the patch-scoped count above, so the per-rank match totals can exceed it.
| Rank | Mars win rate | Matches |
|---|---|---|
| Herald & Guardian | 42.48% | 113 |
| Crusader & Archon | 47.49% | 358 |
| Legend & Ancient | 48.73% | 353 |
| Divine & Immortal | 42.47% | 186 |
Mars's win rate against Io in each recent balance patch — whether this matchup is trending up or down. Patches without enough matches are omitted.
| Patch | Mars win rate | Change | Matches |
|---|---|---|---|
| 7.41e | 45.20% | ▼ -3.0pp | 396 |
| 7.41d | 48.16% | ▲ +1.9pp | 27,449 |
| 7.41c | 46.22% | ▲ +1.4pp | 16,172 |
| 7.41b | 44.86% | — | 18,398 |
Move this data into a draft
Mars starts on Radiant and Io on Dire. Add the other eight picks to see whether this head-to-head edge survives the full draft.
Data updated Aug 11, 2026.