50 Cent once bet his entire career in a bitter chart battle with Kanye West

50 Cent bet his entire career on outselling Kanye West back in 2007 and even claimed he’d quit releasing solo albums forever if West outsold him.

Ye’s third album, Graduation, dropped on this day 15 years ago and was immediately hailed as a classic on release.

Featuring hits like ‘Stronger’, ‘Flashing Lights’ and ‘Can’t Tell Me Nothing’, the project was one of Kanye’s most commercially successful and a landmark moment in hip-hop history.

Yet, one of the more fascinating aspects of the album’s pre-release was the burgeoning rivalry between West and 50 Cent, both seen at the time as kings as their respective lanes.

Coming off of the back of the immense success of Get Rich or Die Tryin, 50 was arguably the biggest gangsta rapper in the world at that point, whereas Kanye’s trademark production chops and off-beat persona had brought him huge critical acclaim and ushered hip-hop into a new direction.

So when it was revealed that the two would be dropping their new albums on the same day in 2007, many saw it as a battle between the two titans of hip-hop.

In the clip, Fiddy blasts Kanye’s critical acclaim as down to him being a ‘safe choice’ for award shows, saying: “I don’t get trophies, I get the checks. He [Kanye] gets the trophies."

"They’d like to see Kanye West give me a problem because I’ve worked myself into a space where I’ve become the favourite,” 50 Cent continued. “Everybody roots for the underdog when he goes against the favourite, but let’s raise the stakes. 

“If Kanye West sells more records than 50 Cent on Sept. 11, I’ll no longer write music.” 

He clarified: "I won’t put out any more solo albums."

Despite his tough talk, 50 Cent eventually ended up losing heavily to Kanye, with Graduation selling 957,000 units to Curtis’ 691,000.

The ensuing rout was credited with killing gangsta rap in the mainstream and established Ye as the undisputed king of late 2000s hip-hop.

“That's when I feel like, around that time, the Lupes, and the new guys who could really spit got that chance -- even with Drake, if it wasn't for Kanye standing up to 50, would Drake music be able to work at that time, you know what I'm saying?" he continued.

50 ended up releasing two more solo albums after losing his wager, with 2009’s Before I Self Destruct and 2014’s Animal Ambition released to mixed acclaim, although neither managed to outsell his previous work.