“Baseball fans will see the pun straight away; I had to look it up. The non-batting runner, having only made it a certain way around the field, gets tagged out by a fielder trying to “steal”, or sneak up, on a base from the one behind.
“As far as the non-metaphorical meaning goes, no one in this movie is actually apprehended in the act of theft. But in a world where home runs are unavailable to most, the idea of cheekily trying for covert advantage and survival through quick wits is clear.”
Read more at The Guardian