GS+
Toe the Slab's completed-start score. It rates one start using line quality, workload, strikeouts, walks, run prevention, park, opponent, and calibration context.
Toe the Slab
Reference
Glossary
RGS
Rolling GS+. A starter's recent-form average over the selected Heat Check window.
Projected GS+
Forward-looking starter estimate from current form, line-backed workload, park, weather, rest, and opponent handedness splits when available.
Driver chip
Compact data chip explaining what moved form: strikeouts, walks, depth, or run prevention.
ERA anchor
Traditional ERA shown as secondary context. It is descriptive only and never drives rank.
Opponent split
Team hitting context against the starter's handedness, sourced from MLB team stat splits and shown as OPS, K%, BB%, ISO, and slate rank context.
Pitch data pending
A start has a real MLB line but no verified pitch-event feed. Toe the Slab hides pitch charts rather than showing synthetic data.