MLB ScoreBug for OBS: the pitch-by-pitch setup guide
Updated June 11, 2026 · 10 min read · Works with OBS, Streamlabs, Meld & evmux
If you stream baseball — watch-alongs, postgame shows, fantasy breakdowns — the single biggest production upgrade you can make is a live pitch-by-pitch scorebug. This guide sets up the StreamSlayers MLB ScoreBug in OBS: score, inning, the live ball–strike count, outs and base runners, plus the current pitcher and batter with a rotating carousel of their season stats, straight from live game data.
You also get three companion overlays in the same app — a full box score (split Hitters/Pitchers pages you can flip live) and away/home starting lineups — each with its own browser-source URL. The video above shows the whole setup on camera; the steps below cover every setting with screenshots.
What you'll need
- OBS Studio (or Streamlabs, Meld, evmux, XSplit)
- A StreamSlayers plan with MLB ScoreBug — 4-day free trial
Copy the overlay URLs you need
MLB ScoreBug gives you four overlay URLs, each meant to be its own browser source in OBS:
- Scorebug — the pitch-by-pitch strip you'll likely keep on screen all game.
- Box Score — full batting/pitching tables, linescore and decisions.
- Lineup (Away) and Lineup (Home) — starting lineup cards, great for pregame segments.
Add the browser source(s) in OBS
- Sources → + → Browser, name it "MLB ScoreBug".
- Paste the scorebug URL.
- Set 1280 × 720 (the recommended size for these sources) and click OK.
Repeat for the box score and lineup URLs if you want them as separate sources — you can put them in different scenes (a "Pregame" scene with lineups, a "Live" scene with the strip).
Pick today's game
Choose the date and click your game. Live games show their current score and inning right in the list; final games show the result. The overlay then drives itself — it waits quietly until first pitch, polls at your chosen refresh rate during the game, and stops at the final out.
Style it: themes, position, 3D logos
Ten themes change the entire look of the bug, from the Standard broadcast style to alternate designs. Anchor it to any corner or edge with the 9-way anchor grid, fine-tune with scale and X/Y offset sliders, and set opacity. MLB matchups can render animated 3D team logos for extra polish — or flip one toggle for flat logos.
Sync to your stream delay and go live
Baseball's biggest spoiler risk is an overlay that's ahead of your video — a strikeout appearing on the bug before the pitch on screen. Set the Stream Delay slider to match your broadcast delay and the data will wait for your video. Then start your stream: count, bases, outs and batter/pitcher stats update pitch by pitch, hands-free, for the rest of the game.
Troubleshooting
Blank source in OBS? Almost always a wrong or outdated URL in the browser source — re-copy from the settings page. Make sure a game is selected too.
Bug shows "waiting" before the game? That's smart polling doing its job — it wakes up automatically a few minutes before first pitch.
Want the box score only between innings? Put it in its own scene, or use a Stream Deck key / the Command Center to flip the Hitters and Pitchers pages live without touching OBS.
FREQUENTLY ASKED QUESTIONS
What does the MLB ScoreBug show during a game?
Score, inning, the live ball-strike count, outs, base runners, and the current pitcher and batter with a rotating carousel of their seasonal stats — all updating pitch by pitch from the official MLB data feed.
What are the four overlay URLs for?
The app gives you separate browser-source URLs for the scorebug strip, the full box score, and the away and home starting lineups. Each one is its own OBS source, so you can show the strip all game and bring lineups or the box score up between innings.
Does it stop polling when the game ends?
Yes — smart polling waits before first pitch, polls at your chosen refresh rate while the game is live, and stops at the final, which keeps your browser source light.
Can I sync the overlay to my stream delay?
Yes. There's a stream delay slider — match it to your broadcast delay so the scorebug never spoils a strikeout before your viewers see the pitch.
How many designs are there?
Ten scorebug themes, from the Standard broadcast look to alternate styles, plus per-design scale, anchor position and X/Y offsets, opacity, and 3D team logo options.
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