Tapes and strapping typically have 2 purposes in sports. The first being for the treatment and prevention of injuries. The second being getting prepared for sport.
Kit tape such as that used in football to keep both football socks and shin pads in position is used by around 70% of players at any level, from Sunday league all the way up to the UEFA Champion's League. Other tape such as under wrap and sock wraps are also used commonly in preparing for sport.