[greymule]

Did the fielder fall down in DBT? If he remained standing and didn't drop the ball, the ball should remain in play in OBR, shouldn't it? (Or was that changed recently? Added: Yes, in a spectator seating area, he doesn't have to fall. Ball is dead, one base for the runners.) If he had "complete possession," left the field, remained on his feet, and then dropped the ball while in DBT, the MLBUM says two bases from the time the ball was dropped (not the time the ball left the field).

The MLBUM does not seem to cover what happens if the fielder (not after a catch) had complete possession when he left the field and fell into DBT.

I'll see whether the J/R covers the OP specifically.