BASIC RESPONSIBILITIES RUNNERS ON BASE

  PLATE UMPIRE BASE UMPIRE
FAIR / FOUL All fair/foul decisions No fair/foul decisions from inside diamond
CATCH / NO CATCH

All fly balls in front of pitcher's mound.

Fly balls straight back to pitcher.

Fly balls handled by infielders or out-fielders "close to and going toward" the foul lint

All fly balls to infield except those to infielders "close to and going toward" the foul lint

All fly balls to outfield except those to outfielders "close to and going toward" the foul line

TOUCHING BASES All runners touching 3rd except batter-runner  No responsibilities for runners touching 1st or 2nd

All runners touching 1st and 2nd bases

'Batter-runner touching 1st, 2nd, and 3rd

TAG-UPS All tag-ups at 3rd All tag-ups at 1st and 2nd
PICK-OFF / STEALS

No pick-off responsibility    

Steal of home only

All pick-offs at 1st, 2nd, and 3rd

All steals at 1st. 2nd, and 3rd

RUNDOWNS May advance into position to take 1st or 3rd end of rundown, if practical.

Total responsibility except when PU

assumes one end at either 1st or 3rd

PLAY COVERAGE

Limited responsibility at 3rd when no play is possible at home:

(1) Runner on 1st only, PU takes play at 3rd on base bit to outfield

(2) Runners on 1st and 3rd. PU takes play at 3rd on R, on base hit to outfield

(3) Runners on 1st and 2nd with less than 2 outs when runner from 2n is tagging-up, PU takes play at 3rd

(4) PU never leaves plate area with possibility of a Time Play

All plays on the bases with the following

exceptions:

(1) PU covers 3rd in specified

situations

(2) PU covers all plays on the BR

when BU goes out

(3) PU assists in rundowns, if possible