Amanda Anisimova (+97, 192 to 95): Despite a four-month mid-season layoff due to an ankle injury, the 17-year-old American turned heads with a win over Petra Kvitova to make the fourth round of Indian Wells and a maiden final in Hiroshima (Getty)
Check out the 15 players in the 2018 year-end Top 100 who improved their position by the greatest amount since their 2017 year-end placement - plus two honorable mentions.
