Ok... But wouldn’t that mean that with no outs, two men on, both with leads, a caught line drive would retire the side?
I’ve never seen anyone with a lead be called out on a caught line drive. But you said running, didn’t you? Do you mean they have to make an obvious move to the next base?
He’s completely wrong. There is no play in baseball where a runner is automatically out for taking a lead, whether he’s standing off the based poised to go, running, skipping or doing cartwheels..