Nine DFS books, one board: the esports pick'em market

Nine books, 32 sources, one shape

Chalkboard makes nine DFS pick'em books on the board and 32 sources in total. Every one of them posts its own lines in its own app, and every one of them lands on GET /v7/{sport}/props as the same row: player, stat type, line, direction, price, book.

The normalization is the product. JamYoung on Chalkboard is the same canonical player as JamYoung on PrizePicks, on the same canonical event, so nine apps' worth of boards collapse into one market per player-stat-match. No fuzzy name matching on your side.

What a soft line looks like in the response

These are real rows off the board on 3 November 2026. Same player, same stat, same canonical_event_id: Betr posts the over at 27.5 and 28.5 while Boom hangs 29.0, a kill and a half of disagreement on one market:

{
  "source": "kashrock",
  "sport": "cs2",
  "board": "dfs",
  "props": [
    {
      "book_name": "Betr",
      "propId": "kr_prop_8d0caba5639f",
      "player_name": "d1Ledez",
      "stat_type": "CS2_KILLS_MAPS_1_2",
      "line": 27.5,
      "direction": "over",
      "odds": -137,
      "decimal_odds": 1.7299,
      "canonical_event_id": "kr_ev_3032b8e6575d",
      "canonical_event_name": "BetBoom Team vs Aurora Gaming",
      "kr_match_id": "kr_cs2_aurora-gaming-vs-betboom-team-04-11-2026"
    },
    {
      "book_name": "Betr",
      "propId": "kr_prop_156b210eeebf",
      "player_name": "d1Ledez",
      "stat_type": "CS2_KILLS_MAPS_1_2",
      "line": 28.5,
      "direction": "over",
      "canonical_event_id": "kr_ev_3032b8e6575d",
      "kr_match_id": "kr_cs2_aurora-gaming-vs-betboom-team-04-11-2026"
    },
    {
      "book_name": "Boom",
      "propId": "kr_prop_bae5f62e31bc",
      "player_name": "d1Ledez",
      "stat_type": "CS2_KILLS_MAPS_1_2",
      "line": 29,
      "direction": "over",
      "odds": -132,
      "decimal_odds": 1.76,
      "canonical_event_id": "kr_ev_3032b8e6575d",
      "canonical_event_name": "Aurora Gaming vs BetBoom Team",
      "kr_match_id": "kr_cs2_aurora-gaming-vs-betboom-team-04-11-2026"
    }
  ]
}

Notice the books do not even agree on the fixture order: Betr says BetBoom vs Aurora, Boom says Aurora vs BetBoom. The canonical event and the kr_match_id are the same, so the comparison never breaks on ordering. Each propId is the offer id for that book's line; the market is the canonical player, stat type and event they share.

Read one book or the whole board

curl -s -H "X-API-Key: $KASHROCK_API_KEY" \
  "https://kashrock.up.railway.app/v7/cs2/props?book=chalkboard"

const { props } = await kr.props("cs2", { view: "rows", market: "CS2_KILLS_MAPS_1_2" })
const mine = props.filter((p) => p.player_name === "d1Ledez" && p.direction === "over")
for (const p of mine) console.log(p.book_name, p.line, p.decimal_odds)

DFS rows vs sportsbook rows

Pick'em lines live on the dfs board (the default), priced as over/under picks on a fixed line. Sportsbook player markets, where a book posts them, live on main, and all reads both. The books object on every response reports which venues are present, their row counts and age in seconds, so coverage is something you read, not assume.

The newest of the nine is Chalkboard, the deepest per-map book on CS2 today: the Chalkboard props post covers the book and the CS2 headshot props post maps who posts which headshot market. The DFS esports API page is the board's reference, and a free Sandbox key reads the CS2 board with 1,500 credits a day.