[greymule]

Yes, the posts have been very helpful. I posed the question originally because of a play I saw on TV. BR beat the throw but appeared to miss 1B, then overran by quite a bit. F3, who had come off the bag after the catch, then returned to step on 1B and held the ball up for the umpire to see. I don't think F3 vocalized an appeal, however. No call. When the runner, who was calmly walking back to 1B, got near the bag, F3 tagged him, and the ump called the out.

So I don't know whether the runner had begun to return when F3 went back to step on 1B, or whether F3 verbally appealed either at that time or when he finally tagged BR.