Answer:

error

AnswerCrossword Clue
ERRORBox-score bobble
ERRORFaux pas
ERRORPartner of trial
ERRORSlip-up
ERRORMisstep
ERRORMistake
ERROR"E" in the box score
ERRORBaseballer's nightmare
ERRORDropped fly, e.g.
ERRORProgramming bug, perhaps
ERRORTennis statistic
ERRORTrial's partner
ERRORProgrammer's headache
ERRORBug
ERRORCrash cause, often
ERRORTyping alot, for example
ERRORWild throw, e.g.
ERRORTrial partner
ERRORFalse step
ERRORFailing
ERRORGoof
ERRORProof of humanity
ERRORBaseman's boot
ERRORSoftware glitch
ERRORSlip
ERRORMiscalculation
ERRORSlip on a diamond
ERROR"Does not compute"
ERRORFenway "E"
ERRORScoreboard E
ERRORInaccuracy
ERROROverthrown ball, e.g.
ERRORDialog-box prompter, maybe
ERRORFumble at Fenway
ERRORFlub at Fenway
ERRORGaffe
ERRORMiscue
ERRORDiamond flaw
ERRORDiamond misplay
ERRORFlub