Valve has reportedly given each team participating in The International 5 a statistics guide, after a caster allegedly leaked the documents to one team.

According to a tweet from Team Secret's Artour "Arteezy" Babaev, Valve [See update below] gave casters and analysts at TI5 a book of statistics and details on every team. Arteezy claims that one caster allegedly leaked it to a team before the event began.

Lmao shoutout to the caster who shared the stats on every team (supposed to be intel for casters/analysts) with some teams and now 1/2 — Artour (@Arteezy) July 25, 2015

its sent to every single team — Artour (@Arteezy) July 25, 2015

The caster's name, and which team they leaked the information to have not been disclosed.

The 60-page document reportedly includes statistics like hero picks, ward patterns, KDA averages, and item preferences. Pages from the document were obtained by GosuGamers' Andrew Henderson.

According to Arteezy, the document has since been given to every team competing, though no team has made an official statement on the matter.

Shady shit naturally happens when there is money involved, but I'm glad Valve gave the data to everyone in response — Artour (@Arteezy) July 25, 2015

TI5 starts on July 26 with the wildcard phase. After that, the group stage will run from July 27-30, and the main event will take place from Aug. 3-8.

Update: Alan "Nahaz" Bester, who is working with The International in an analysis role, has clarified the origin of the document in a Reddit post.

Bester explained that the document was a "stats Bible" compiled by Anthony "Scantzor" Hodgson and Ben "Noxville" Steenhuisen, the latter of which is the English-language statsperson for The International, and not Valve themselves. The document meant to "assist talent in prepping for the event," and did not contain any information that was not publicly available.

Update: compLexity Gaming player Tal "Fly" Aizik has commented on the issue in an interview with theScore eSports.

"I don’t really know how it came to be, like who got the information first. But a lot of it is pretty valuable and it’s very detailed," he said. "Some of it I feel is a little outdated, so I can’t trust it completely, but some of those statistics do help, like how much [does a team] like this hero specifically, and the very recent matches."

"I don't really know if it’s a good thing or a bad thing. Either way I would be searching for these statistics before every match anyways," he said. "Even if I didn’t have this page we would have gotten something similar either way."

You can read the rest of the interview here.

Update: Team Archon's Ioannis "Fogged" Loucas has further commented on the event in an interview with theScore eSports. Loucas confirmed that Team Archon had seen the document.

"It can be useful but at the same time it can also probably be really detrimental to some teams because you’re going to look at this, and it’s not since a month or two months ago, it’s like three months ago, since [Dota 2 Asian Championships], so there is a lot of information there that as the patch progresses, teams started understanding more like what the changes were," he said.

Daniel Rosen is a writer for theScore eSports. He believes that true happiness is found in a c.mk xx m.fireball string. You can follow him on Twitter.