One of the highlights of the sports year is the unpredictability — that team you never saw coming or a player who defied odds. And sometimes, random characters emerge and dominate the sports conversation (looking at you, LaVar Ball.) What will 2018 bring to the sports world? USA TODAY Sports provides some serious and not-so-serious predictions. 1. LeBron James joins the Lakers. And Cavs owner Dan Gilbert has another meltdown when the King leaves Cleveland, spurning the city again. Imagine LaVar Ball inviting LeBron for dinner and Lonzo Ball directing the fastbreak with LeBron for the finish. If one executive can get a monster signing done, it’s Lakers front man Magic Johnson. 2. Lonzo Ball breaks free from his daddy’s web. If James (or another superstar) heads to the Lakers, Lonzo will decide that LaVar’s outlandish comments and behavior are too much. The ultimate betrayal: Lonzo signs with Nike or Adidas over Big Baller Brand. 3. Spurs coach Gregg Popovich announces he will run for president in 2020. And Pop selects Warriors coach Steve Kerr as his running mate. Both NBA coaches denounced President Donald Trump’s rhetoric in 2017. Imagine a debate between Popovich and Trump. 4. A healthy Tiger Woods wins another major. Finally playing without serious back pain, Woods wins his first major since 2008. Just seeing Tiger…