Did you happen to see this one last night? I think it was a Mets game (but I may be wrong.)
On the pitch, R2 breaks for third, then retreats to back to second.
R1 didn't see R2 retreat and R1 heads towards second.
Catcher pops up with the ball and runs towards the runners at 2nd.
Catcher tags R1.
And there it was. R1 caught stealing, C gets the putout with no assist.
Pretty cool if you like seeing unusual events from a scorekeeping standpoint.