Tiger, Tiger, Tiger.
Despite all of the physical struggles for Tiger Woods in recent years, he flashed signs throughout 2018 of returning to his old self. Serena Williams had a baby, but she still played in tournaments, including during majors.
There also were those successes for teams.
You had Villanova continuing its dominance in college basketball, while Alabama did the same in college football.
You also can't forget about the Golden State Warriors.
That's for starters.