alternatives: Check Swing, He Checked His Swing
Day Game After a Night Game
usually relevant for catchers, some of whom don't play the day game if it follows a night game in the same town.
the game before the team travels away from a series when they're the visting team, or, for the home team, the day before they travel on the road.
The Wikipedia page on baseball saves has an outline of what a save situation is.
Usually when there is someone on first base and nobody out, where a batter might bunt the ball to move the runner over. Especially true if there's a runner on first and second and no outs.
In Line For The Win
when a pitcher leaves the game and he's qualified for the stat called a "win". Could be shortened to ILFTW.
Humpback Liner (which is the name of a blog)
This is the name of my baseball pool team, so please don't call your band that.