In baseball, to tag up is for a baserunner to retouch or remain on their starting base (the time-of-pitch base) until (after) the ball either lands in fair territory or is first touched by a fielder. By rule, baserunners must tag up when a fly ball is caught in flight by a fielder.
网络释义
1、重新进入蓝线
... Stickhandling 控球带球能力 Tag up 重新进入蓝线 Toe drag 拖球前进 ...