[Rich Ives]

Originally Posted by umpjim

Might have been a balk two ways, step and back edge of the rubber:

Baseball Video Highlights & Clips | WSH@SD: Balk called against Richard in sixth - Video | MLB.com: Multimedia

I'm in FED mode now so I'll have to review whether it's any part of the free foot in OBR. Need the whole foot in FED.

MLBUM 7.5

Any part of the foot past the back edge - must pitch or move to 2B..

Moving the knee past is OK.