---
agentTools:
  siteIndex: https://developer.sportradar.com/llms.txt
  projectIndex: https://developer.sportradar.com/sportradar-updates/llms.txt
---

# MLB API - ABS Challenges

We’ve added support for the new ABS Challenge System in our <Anchor label="MLB API" target="_blank" href="https://developer.sportradar.com/baseball/reference/mlb-overview">MLB API</Anchor>.

<br />

⭐ **Benefit**

MLB's <Anchor label="ABS (Automated Ball-Strike) Challenge System" target="_blank" href="https://www.mlb.com/news/abs-challenge-system-mlb-2026">ABS (Automated Ball-Strike) Challenge System</Anchor> will be adopted for the 2026 regular season.

In response, we've added a `abs_challenges` element to our **Game Summary** and **Game Extended Summary** endpoints. Use these fields to determine the number of remaining, successful, and failed challenges for each team in a game.

This element is available for use right now during **Spring Training** and will be added to the **Game Play-by-Play** and **Game Boxscore** endpoints soon.

```xml XML Snippet
<abs_challenges>
      <home used_successful="2" used_failed="1" remaining="1"/>
      <away used_successful="2" used_failed="1" remaining="1"/>
</abs_challenges>
```

<br />

☑️ **Sample Requests:**

* **Game Summary** - `https://api.sportradar.com/mlb/trial/v8/en/games/08f55ddd-aa70-4a01-8c7c-ef92b3d3eceb/extended_summary.json`

<br />

🔢 **Versions**

* <Anchor label="MLB v8 API" target="_blank" href="https://developer.sportradar.com/baseball/reference/mlb-overview">MLB v8 API</Anchor>

<br />

🔁 **Endpoints Affected**

* <Anchor label="Game Summary" target="_blank" href="https://developer.sportradar.com/baseball/reference/mlb-game-summary">Game Summary</Anchor>
* <Anchor label="Game Extended Summary" target="_blank" href="https://developer.sportradar.com/baseball/reference/mlb-game-extended-summary">Game Extended Summary</Anchor>

<br />

⚙️ **Return Samples**

```xml
<game xmlns="http://feed.elasticstats.com/schema/baseball/v8/game.xsd" id="08f55ddd-aa70-4a01-8c7c-ef92b3d3eceb" status="closed" coverage="full" game_number="1" day_night="D" scheduled="2026-02-22T20:10:00+00:00" home_team="dcfd5266-00ce-442c-bc09-264cd20cf455" away_team="833a51a9-0d84-410f-bd77-da08c3e5e26e" attendance="3427" duration="2:57" season_id="f5e6b3d5-e73e-4c6c-8955-96610417e521" season_type="PRE" season_year="2026" double_header="false" split_squad="true" entry_mode="STOMP" reference="831841" gameday_type="E">
    <mound_visits>
        <home used="3" remaining="1"/>
        <away used="0" remaining="4"/>
    </mound_visits>
    <reviews>
        <home used="0" remaining="2"/>
        <away used="0" remaining="2"/>
    </reviews>
    <abs_challenges>
        <home used_successful="2" used_failed="1" remaining="1"/>
        <away used_successful="2" used_failed="1" remaining="1"/>
    </abs_challenges>
    <time_zones venue="US/Arizona" home="US/Central" away="US/Central"/>
```
```json
{
    "game":
    {
        "id": "08f55ddd-aa70-4a01-8c7c-ef92b3d3eceb",
        "status": "closed",
        "coverage": "full",
        "game_number": 1,
        "day_night": "D",
        "scheduled": "2026-02-22T20:10:00+00:00",
        "home_team": "dcfd5266-00ce-442c-bc09-264cd20cf455",
        "away_team": "833a51a9-0d84-410f-bd77-da08c3e5e26e",
        "attendance": 3427,
        "duration": "2:57",
        "season_id": "f5e6b3d5-e73e-4c6c-8955-96610417e521",
        "season_type": "PRE",
        "season_year": 2026,
        "double_header": false,
        "split_squad": true,
        "entry_mode": "STOMP",
        "reference": "831841",
        "gameday_type": "E",
        "mound_visits":
        {
            "home":
            {
                "used": 3,
                "remaining": 1
            },
            "away":
            {
                "used": 0,
                "remaining": 4
            }
        },
        "reviews":
        {
            "home":
            {
                "used": 0,
                "remaining": 2
            },
            "away":
            {
                "used": 0,
                "remaining": 2
            }
        },
        "abs_challenges":
        {
            "home":
            {
                "used_successful": 2,
                "used_failed": 1,
                "remaining": 1
            },
            "away":
            {
                "used_successful": 2,
                "used_failed": 1,
                "remaining": 1
            }
        },
        "time_zones":
        {
            "venue": "US/Arizona",
            "home": "US/Central",
            "away": "US/Central"
        },
```