Stop if you've heard this one before: powerful adviser has signed another top fighter.
Haymon continued his signing binge on Friday, inking welterweight contender (and former featherweight and junior lightweight titlist) Robert Guerrero.
Guerrero co-manager Luis DeCubas Jr. and Sam Watson, Haymon's right-hand man, both told ESPN.com that the deal was signed.
"We're very excited. I think it's proven that Al Haymon is the top adviser in boxing," said DeCubas, who also has junior middleweight titlist Erislandy Lara with Haymon. "Robert is one of the top welterweights in the world. It's the hottest division and we're ready to fight. Robert is looking at all comers and we're looking to take over the division."
DeCubas and Bob Santos will continue to co-manage Guerrero.
"It's a wonderful team and me and Bob are extremely excited to bring Robert in as part of the Haymon family," DeCubas said.
Guerrero said in a statement, "Signing with Al Haymon was a team decision and together we feel with no doubts that this was the best move for my career. Team Guerrero and Team Al Haymon are united as one and together we are going straight to the top. I'm hungry and I'm ready to get back in the ring. My goals are still the same and that's to be the best fighter I can be and give the fans great performances."
Haymon's stable already boasts numerous top fighters, including cornerstone boxer Floyd Mayweather Jr. not to mention Marcos Maidana, Adrien Broner, Danny Garcia, Lucas Matthysse, Deontay Wilder, Peter Quillin, Shawn Porter, Keith Thurman, Paulie Malignaggi and many others.
In recent weeks Haymon has also signed junior welterweight titlist Lamont Peterson, his brother, Anthony Peterson, junior lightweight contender Rances Barthelemy and former light heavyweight champion Chad Dawson.
Guerrero has been trying to get out of his contract with Golden Boy Promotions since late last year. After the California State Athletic Commission denied his request for arbitration to break his promotional contract, he threatened litigation. But no suit was filed.
Haymon does almost all of his business with Golden Boy so it's a good bet that Guerrero and the company will quickly iron out their differences. DeCubas did not want to discuss Guerrero's issues with Golden Boy, saying only, "Al Haymon is handling the business decisions for Robert Guerrero's career. It's up to him. We're ready to rock and get in that ring."
Guerrero (31-2-1, 18 KOs), who turns 31 next week, has not fought since last May, when he earned a career-high $3 million in a lopsided decision loss challenging welterweight champion and pound-for-pound king Floyd Mayweather Jr.