Team owner Bud Selig offered Whiteside a job with the Milwaukee Brewers when the franchise relocated from Seattle in 1970, but he preferred to continue working in journalism.

[4] Whiteside covered many of the most notable events in Boston baseball history, ranging from Bucky Dent's home run to defeat the Boston Red Sox in the 1978 American League East playoff, to the Red Sox losing the 1986 World Series to the New York Mets, to Roger Clemens' second 20-strikeout game.

[4] Whiteside developed Parkinson's disease early in the 21st century, which led to the end of his reporting career in 2004.

[3] The day that Whiteside died, the Red Sox observed a moment of silence in his honor prior to their home game against the San Francisco Giants.

[3] In July 2007, Whiteside was selected by a Baseball Writers' Association of America (BBWAA) committee as one of three finalists for the J. G. Taylor Spink Award,[6] and he was announced as the winner on December 5 following a vote by the BBWAA membership; he was honored in July 2008.