Every line on this Nationals-Cardinals board is pinned, the 6.5 total near certain to go over and the 13.5 near certain to stay under, which tells you the tradeable number lives somewhere in between and isn't posted. Neither club has anything left to play for, with St. Louis long out of the wild-card race that Chicago, Philadelphia and San Diego are fighting over. Late-September games between eliminated teams invite bullpen shuffling and call-ups, which widens the range of plausible run totals in both directions. Thin volume means the quoted prices reflect a handful of traders more than a real market read.
Prices are probabilities — our guides cover how to read them, how markets settle, and how we find an edge.