Glossary
Steamer & drifter
A steamer is a selection whose price is shortening (backed in); a drifter is one whose price is lengthening (drifting out) — the two directions of market movement.
As money and information arrive, a selection's price moves. A steamer shortens as it is backed; a drifter lengthens as support falls away. Tracking these moves, especially near the off, is a common signal for value and trading products.
Spotting steamers and drifters needs fresh prices sampled consistently through to the start — which a regularly-polled, normalised feed supports.
OddsRelay delivers this as part of one already-matched feed. See live coverage on the coverage dashboard.