Bartolo's first home run in a twenty year career is clearly a significant accomplishment.
However, what seems even more incredible (perhaps not) is that
Bartolo has never walked in 20 years. His strike out to walk ratio is 121/0.
Even Ron Herbel, with a career BA of .029 and no home runs, was able to draw 8 walks in slightly fewer plate appearances.
Perhaps now that Bartolo is considered a power hitter, he will be pitched to with greater care. I expect that his first base on balls will occur soon.