Jack Clark made a lot of progress in quick fashion, first tasting Major League action in 1975, two years after he was taken deep in the 13^th Round.  Two years later, he was a starter in Rightfield for the Giants, but it was not until the year after that he broke out.

Clark's 1977 was a 25 Home Run year with a .306 Batting Average.  Jack "The Ripper" went to his first All-Star Game and was fifth in MVP voting.  An All-Star again the following year, he belted over 20 Home Runs (26) and would break that mark the third year in a row in 1980 (22).  Clark likely would have had an entire six-year run of 20 Home Runs had the 1981 strike not held him to 17.  Mostly known for his power, Clark had his moments defensively, with a strong throwing arm, though his range was, at times, suspect.

Following a disappointing injury-plagued 1984 and conflicts with Frank Robinson, the Giants Manager, Clark was traded to St. Louis for four players.  With San Francisco, Clark smacked 163 Home Runs and 1,034 Hits.

In 2008, Clark was among many selected for the inaugural Wall of Fame Class.

Jack Clark had the nickname of "Jack the Ripper," which was precisely the moniker that befit a lethal power.