Yes to your comment back pivot.
(rather to side behind batter)
Same options righty catcher has throwing to first with left handed hitter.
Lefty to 3rd From Feet-
Pivot left foot step behind batter to throw behind.
Or Create more throwing lane by initial step (pivot foot) moving left further if needed.
( move left, clears lane, throw)
( this could be like a pitchout type manuever for visual)
Or burst out throw in front.
Throwing from knees,
Same move left leg left, clears lane, throw.
More common thrown behind batter.
Obviously pitch location can dictate throw mechanics feet or knees.
Train mechanics.
Transition speed really important!!
Towards 2nd half of video can see good visuals on side to side
mechanics with throws.
*Can clear plenty of throwing lane both ways!
( video used with permission of parent who created it )
LETS THROW RUNNERS OUT !
Or more specifically, what is the footwork for a lefty on the throw to third when the pitch is well outside and they are forced to throw in front of the batter? We have experimented a bit and the best we could come up with for this situation was a back pivot.