Step 1 : Introduction to the question "Which tennis star was stabbed by a deranged man during a match in 1993?"
...In 1993, tennis star Monica Seles was the victim of a shocking on-court attack during a match in Hamburg, Germany. Her assailant, 38-year-old Günter Parche, a deranged and obsessive fan of fellow German player Steffi Graf, stabbed Seles between the shoulder blades with a 9 inch knife. He later admitted he hoped the attack would allow Graf to reclaim the No. 1 ranking. Parche was immediately apprehended by security, and Seles was rushed to the hospital. Traumatized by the incident, she did not return to professional tennis for nearly two years.