Error (baseball): fielding misplays, scoring rules, and effects

Definition and common situations

The official scorer determines whether a play is an error. Typical situations include mishandling a ground ball, a poor throw that pulls a baseman off the bag, dropping a catchable fly ball, or a misplay that allows an extra base. Certain related events are recorded separately — for example, passed balls and wild pitches are not scored as errors — and catcher's interference has its own scoring rules.

• Notation and positions: errors are written as E plus a number or position; standard position numbers are 1 (pitcher) through 9 (right field).
• Types of error: fielding errors (muffed field grounders), throwing errors (errant throws), and catch/transfer errors (dropped or mishandled catches).

How an error affects batting and other statistics

Error rulings influence several offensive and pitching statistics. An error does not count as a hit for the batter if the scorer judges that the batter reached base solely because of the fielder's mistake; in that case the plate appearance counts as an at bat and is typically recorded as an error (lowering batting average). If the scorer believes the batter would have reached at least first base safely even without the misplay, the play may be scored as a hit with an error charged for any additional base(s) taken.

Runs that score after an error may be designated unearned when reconstructing the inning for a pitcher's earned run average (ERA). Similarly, a batter usually does not receive an RBI on a run that scores solely because of an error, unless the scorer rules the run would have scored regardless. A fielder's choice that should have resulted in an out but instead results in a safe call because of an error will be scored as a fielder's choice with an error charged, not as a hit.

History, scoring practice, and modern perspective

The error has been part of baseball scoring since the 19th century and historically reflected fielders' skill and equipment quality. Official scorers were given wide discretion, and that subjectivity remains: two scorers might rule the same play differently. Over time, errors have become less frequent as gloves, fields, and professional training improved. In recent decades, advanced defensive metrics such as Defensive Runs Saved and Ultimate Zone Rating have been developed to complement or replace raw error totals when evaluating fielding ability.

Examples, conventions, and controversies

Common scoring conventions help maintain consistency: the scorer decides whether a misplay was ordinary or extraordinary in effort, whether a throw should have been completed, and whether a batter should be awarded a hit plus an error for extra bases. Those judgments can be controversial in close plays and can affect records and statistics at the team and individual levels. For more on official scoring and rules, see the role of the official scorer and general scoring guidelines at major statistical references such as league statistics pages. Rules about hits, RBIs, and earned runs are described in scoring manuals and explanatory guides, for instance explanations of what constitutes a hit versus an error and how unearned runs are computed.

For practical examples or scenarios showing how scorers apply these principles, consult instructional resources and play-by-play scoring examples available from rulebooks and educational materials: introductory scoring guides are available at many baseball information sites and training resources, including basic scoring primers and illustrated cases (examples and scenarios). For deeper statistical interpretation and how errors influence broader evaluations of defense and pitching, advanced metrics and sabermetric discussions provide additional context (advanced defensive metrics).

Because the error remains a mix of objective result and subjective judgment, it is best used alongside other measures when assessing defensive performance. While an error records a clear misplay on the scoresheet, modern evaluations consider range, positioning, and play difficulty to provide a fuller picture of a fielder's contribution.