One day, the mega-fight between Canelo Alvarez and Terence Crawford is on; the next day, it’s off. The latest update indicates there's been a significant snag.

After reports that a long-discussed bout between Saul "Canelo" Alvarez and Terence Crawford was inching toward being finalized, a new report from The Ring Magazine claims that those negotiations have fallen apart.

On Monday, Ring Magazine reported that Alvarez and Crawford had an agreement in place for a deal that would see Crawford challenge Alvarez for his unified super middleweight titles, before a subsequent Ring Magazine report two days later indicated the fight was canceled for undisclosed reasons.