Communication by the defense will keep 1B from swiping at nothing. A good catcher at 16U and up can usually tell if a runner is going to attempt a delay. Don’t remember DD getting burnt on a delay more than two or three times during 16’s, 18’s and HS. Curious what method/methods you teach on a pick at 1B.Always discouraged my 1B from the ”blind sweep tags” and took advantage of teams that utilized it against me. The base line is only 60 feet and by the time 1B catches, looks for the tag, the realize the runner is gone it is too late to get her out at 2nd. Had runner take an extra step off the lead and go on the throw to first. Players came up to me and stated “1B is turning the wrong way”