This sports metaphor refers to the practice of shifting to low-risk, defensive, and time-consuming activities as a tactic to preserve a desirable position until the window of opportunity to unsettle matters passes. Basically, the goal is to keep what you have until the chance of losing it is over. In sports, a team that is ahead might slow the pace of play or assume a defensive posture to hold on to the lead until the game is over. Regarding personal or corporate conduct, it may be prudent to do little while exposed and wait for a better time to act boldly.