bases loaded with no outs
Baseball term describing a situation where all three bases are occupied and there are no outs.
They faced a huge crisis with the bases loaded and no outs from the first inning.
With the bases loaded and no outs, the cleanup hitter came to bat.
満塁 simply means 'bases loaded' without specifying the number of outs. 無死満塁 adds the condition of zero outs.
一死満塁 means 'bases loaded with one out', contrasting with 無死満塁 (no outs).
Compound of 無死 (mushi, 'no outs') and 満塁 (manrui, 'bases loaded').