Wysocki first won fame in American middle-distance running when she upset Mary Decker to win the 1978 US Champsionships 800 m in 2:01.99. Wysocki scored another upset victory against Decker (now Slaney) at the 1984 US Olympic Trials, this time at 1500 m. Wysocki outsprinted Slaney to win the Trials in 4:00.18. At the 1984 Summer Olympics, held in Los Angeles, California she finished sixth in 800 m and eighth in 1500 m.  She finished seventh in 1500 m at the 1995 World Championships in Athletics in Gothenburg, Sweden at age 38.