Rivalry Between Visual Artists: Do you follow any?

It is safe to say that there are probably not as many people following the careers of visual artists as there are people following college football rankings. After all, the average art aficionado is generally a fan of specific works of art-- not necessarily the artist who created said work and the disputes he or she may be involved with. That said, people tend to take sides with bitter rivalries-- think Packers vs. Vikings, Cardinals vs. Cubs, or even minor disputes such as Kanye West vs. Taylor Swift-- that involve media hype or obvious fandom. However, it is rare to see the same passion focused on rivalries between visual artists. Rivalries between visual artists, including famous artists, do occur-- and can be fascinating to observe or read about.