Let's look back at Iverson's long career and see where it began dropping off.
When Iverson first entered the league, he was rookie of the year, averaging nearly 24 points and 8 assists a game. In '99, Iverson led the Sixers to a playoff berth, and in '01, to the Finals (with an Eastern Conference leading, 56-26 record). Iverson, the franchise player, played his style of ball and led the Sixers to their best season in years.
When Iverson was traded to the Nuggets, he joined an offensive beast in Carmelo, but many saw this as the beginning of the downfall of AI's career. Especially after they compared his time in Denver to that of the pure point-guard in Chauncey Billups.
However, Denver's front office is the reason for the Iverson flop in Denver. Why they insisted that adding more firepower to an already dangerous lineup was necessary is beyond me. Iverson played how he always played, a way that earned him success. However, he was criticized for his attention to offense (on an offense-based team) as opposed to defense.
When Iverson was traded to Detroit, he was traded to a team that lost a leader and a foundation in Chauncey Billups. Iverson's style once again did not fit the mold, and the superstar was forced to humble himself on Detroit's bench. Detroit, a team that lost its identity, is still suffering from the Chauncey trade, even without Iverson "plagueing" the team.
In Memphis, Iverson didn't believe that Conley was a better option at point-guard than he was (and that he wasn't given a fair training camp evaluation), starting the negative media attention that boiled Iverson's statements to, "I don't want to come off the bench."
After a warm, Philadelphia homecoming, Iverson was relevant again, until he encountered family problems, forcing him to give up on his season.
And here he is now, a great player caught in basketball Limbo.