John Vukovich, a member of 1980 world champion Phillies, died of complications from brain cancer yesterday. He was 59. Curiously, three other men who played in the 1980 World Series – Ken Brett, Tug McGraw, and Dan Quisenberry – also died of brain cancer. That means the incidence rate of the disease among the 50 participants in that World Series is eight percent. Nationally the rate is less than .02 percent.