Big Dog, Bird Dog, Guard Dog: What the Tiers Actually Mean

Three names show up on every read we publish: Big Dog, Bird Dog, Guard Dog. Here's what each one is telling you.

The tier describes the read — not how sure we are

First, the important part. The tier isn't a star rating or a "how confident we are" meter. It describes what kind of read the model is making — specifically, how the model's view lines up with where the game is priced. None of the three is a lock, and a tier is never a promise about the outcome.

Big Dog

A Big Dog is an underdog the model actually favors — a team getting plus-money respect from the market that the model's own read likes anyway. It's the most contrarian read of the three: leaning toward the side the room is leaning away from. When a Big Dog misses, it misses. When the model is right about one, it's the kind of read that stands out precisely because it cut against the grain.

Bird Dog

A Bird Dog is the model's standard read — its straightforward call on a game, without the underdog wrinkle of a Big Dog or the heavy-favorite profile of a Guard Dog. It's the bread-and-butter of what the model puts out, day in and day out.

Guard Dog

A Guard Dog is a high-probability favorite — a side the model reads as likely to win, where the market agrees it's likely too. The trade-off is built into the price: more probable, but priced like it. "Likely" still isn't "certain," and we grade a Guard Dog miss exactly the same as any other.

Why we tier them at all

The label tells you what you're looking at before you read a word of the reasoning. A Big Dog and a Guard Dog are fundamentally different kinds of reads with different risk profiles, and flattening them into one undifferentiated "pick" would hide that from you. The tier is context, not a guarantee.

Three dogs, three kinds of read. What they all share: published before first pitch, graded in public, win or lose.