Jodie Whittaker's leaving Doctor Who

[Norgarth]

But is he on first?

yes, you can tell by the orientation of the white chalk line compared to the dirt.  the only way it configures like that is at first base.

At second there'd be no chalk line, and at third the chalk line would be oriented from the mid right side of the pic to the bottom edge of the of the pic on the left side.