Here's the rule: 7.08 Any runner is out when -- (j) failing to return at once to first base after overrunning or oversliding that base. If attempting to run to second the runner is out when tagged. If, after overrunning or oversliding first base the runner starts toward the dugout, or toward a position, and fails to return to first base at once, that runner is out, on appeal, when said runner or the base is tagged. 1. The rule doesn't say it's whether he had the slightest thought about going to second base or took a half step left instead of right. The rule is whether he attempted to go to second base. He didn't. 2. As to returning at once to first, look at the examples. He didn't start toward the dugout or go to his position. He clearly intended to stay on first base. So that doesn't apply either and calling him out for that would be not just a BS application of a technicality but wrong. Bad call. At best you can say that it's arguably correct (even though completely unnecessary since nobody was somehow fooled into thinking he was going to second so why exercise your judgment to make the call that way). But even that is a losing argument Yelich was justifiably upset. So was Uecker and I've been listening to him for 50+ years and he is not a homer on this kind of stuff.