Glossary
Left on base (LOB)
Left on base (LOB) counts the runners still on base when an inning ends. A team total shows how many scoring chances it left behind; a batter's LOB counts the runners stranded by that batter's outs.
At the end of each half inning, count the runners still standing on a base when the third out is made. Two on and a strikeout to end the inning is two left on base. Add the innings together for the team's LOB for the game, and write it in the line under the inning totals.
There are two ways the number gets used. Team LOB is the one in the box score: the runners the team got on and did not bring home. Individual LOB, which some scorers keep, counts the runners left on when a batter makes an out, so a batter who flies out with the bases loaded and two outs is charged with three.
The score sheet also checks itself with LOB. For each team, plate appearances should equal runs plus runners left on base plus batters put out. If those do not add up, a box somewhere is missing a mark, and it is easier to find it at the end of the inning than at the end of the game.
For a coach, LOB is a question to ask, not a verdict. A high number means the team is getting runners on, which is good, and then not moving them, which may call for a bunt, a hit and run or a steal at the right moment.
Examples
- Runners on first and second, the batter grounds out to end the inning: 2 LOB.
- Bases loaded, two outs, a strikeout: 3 LOB for the team, and 3 for the batter in an individual count.
- Runner on third with one out, a sacrifice fly scores the run, then a groundout: 0 LOB.
Put it on a card: Score sheets.
Frequently Asked Questions
What does LOB mean in baseball and softball?
Left on base: the number of runners still on base when an inning ends. Box scores show it for each team.
Does a runner put out on the bases count as left on base?
No. Only runners still safe on base when the third out is made are left on base. A runner thrown out is counted with the outs.
How do you check a score sheet with LOB?
For each team, plate appearances should equal runs scored plus runners left on base plus batters and runners put out. If it does not balance, a box is missing a mark.
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