His stuck moment:
After reaching the top world ranking in 1995, Agassi got caught in a swirl of distractions (movie-star marriage and crystal meth, among them) that landed him at the #141 ranking.
He gets restoked: He moved out of the fast lane and began playing in lower-caliber circuits, where he rediscovered his spark.
Unstuck result: In 2003, he was #1 again. He retired in 2006 as an eight-time Grand Slam champion.
(All information comes from public sources and does not imply endorsement of Unstuck.)