---
license: cc-by-4.0
language:
- en
tags:
- dota2
- esports
- game-analytics
- drafting
- the-international
- esports-world-cup
pretty_name: Dota 2 Pro Tournament Drafts (TI & Esports World Cup 2025–2026)
size_categories:
- 10K<n<100K
configs:
- config_name: games
  data_files: games.parquet
- config_name: draft_steps
  data_files: draft_steps.parquet
- config_name: hero_stats
  data_files: hero_stats.csv
---

# Dota 2 Pro Tournament Drafts — TI & Esports World Cup 2025–2026

Every Captains-Mode draft from four top-tier Dota 2 tournaments, in clean
long/wide tables — plus a column nobody else publishes: the **archived
pre-series win probability of a calibrated prediction model**, recorded
*before* each TI 2026 series was played.

Curated by [batru.gg](https://batru.gg?utm_source=dataset&utm_medium=readme) — calibrated Dota 2 / Deadlock /
Marvel Rivals win prediction and meta analytics.

## Coverage

| tournament | event | games |
|---|---|---|
| `ti-2025` | The International 2025 (Hamburg) | 144 |
| `ewc-2025` | Esports World Cup 2025 (Riyadh) | 89 |
| `ewc-2026` | Esports World Cup 2026 (Paris) | 157 |
| `ti-2026` | The International 2026 (Shanghai) | 148 (complete — won by Team Spirit, 3–2 over TEAM VISION off a full lower-bracket run) |

**538 games, 12,912 draft actions total — every Captains-Mode game of all
four events.** Completeness was verified against both OpenDota league records
and Liquipedia's per-event game counts; two drafts OpenDota lost were
recovered from Liquipedia and cross-validated (see notes below). The only
official result not included is EWC 2026's group-D 1v1 Shadow Fiend
tiebreaker (TaiLung vs Abed) — a solo mid duel, not a Captains-Mode game.

## Files

- **`games.parquet` / `games.csv`** — one row per game: tournament, phase,
  date, series id, best-of, teams, sides, first-pick side, winner, and
  `model_pre_series_p_team1` (TI 2026 only; see below).
- **`draft_steps.parquet` / `draft_steps.csv`** — one row per Captains-Mode
  action (24 per game): step order (1–24), `pick`/`ban`, side, team, hero.
- **`hero_stats.csv`** — per-tournament per-hero aggregates: picks, bans,
  contests, contest rate, W–L when picked.

## The model column (and its honesty rules)

`model_pre_series_p_team1` is the probability (0–1) that `series_team1` wins
a game, produced by batru.gg's pro-team model and **archived before the series
started** (TI 2026 was tracked live on a 30-minute cron; 86 of the 148 games
carry an archived probability — series that started before tracking began
carry `null`, not a backfilled guess). Retro-compiled
tournaments (2025 events, EWC 2026) deliberately carry `null` — computing a
"prediction" after the result is known would be a fabricated track record.
The model's public evaluation ledger (every weekly champion-vs-challenger
test, wins and losses) is at
[batru.gg/dota2/benchmark](https://batru.gg/dota2/benchmark?utm_source=dataset&utm_medium=readme).

## Provenance & licensing

Match facts derive from official match data via the
[OpenDota API](https://www.opendota.com/); draft sequences are normalized to
the standard Captains-Mode step pattern (24 steps: 14 bans, 10 picks).
Two games OpenDota lost (8891145641, 8959362208) were recovered from
Liquipedia match records: the per-team draft order was reconstructed and the
method validated by reproducing the sibling games' known sequences 24/24.
For 8891145641 the result was additionally verified byte-for-byte against
Valve's own record of the game's crashed first instance (the game died at
48 minutes and was resumed under a new match id, losing its draft metadata
upstream); first-pick sides were confirmed from that record and from the
official broadcast VOD respectively.
Compilation and model outputs © batru.gg, released **CC BY 4.0** — use it
for anything, just credit `batru.gg`. Dota 2 is a trademark of Valve
Corporation; this dataset is not affiliated with or endorsed by Valve.

Analysis only — not betting advice.

## Quick start

```python
import pandas as pd
games = pd.read_parquet("games.parquet")
steps = pd.read_parquet("draft_steps.parquet")

# Most contested heroes at TI 2026
ti = steps[steps.tournament == "ti-2026"]
print(ti.groupby("hero").size().sort_values(ascending=False).head(10))

# First-pick win rate per tournament
g = games.assign(fp_won=(games.first_pick_side == "radiant") == games.radiant_win)
print(g.groupby("tournament").fp_won.mean().round(3))
```

## Live versions of this data

- Auto-refreshing JSON: `https://batru.gg/data/events/ti-2026.json` (and
  siblings) — same numbers, updated continuously during events.
- MCP server for AI assistants: `https://batru.gg/mcp`
  (`get_dota_tournament_stats`).