Bjorn Borg turned to drugs and alcohol because he was "lost" when he retired.
The five-time Wimbledon champion - who revealed in his new book Heartbeats that he experienced two near-fatal overdoses, the first in 1989 and another a few years later - quit the sport when he was just 26 years old and admitted he was unprepared for life away from the court because he had made no real "plan".
