Since the announcement of the Roc Nation earlier this year, Jay Z has been causing a stir in the world sports agencies. Perhaps to the chagrin of the old guard in sports, Jay Z has been signing a string of high-profile athletes like NBA superstar Kevin Durant, rookie New York Jets quarterback Geno Smith and perennial All-Star second baseman Robinson Cano of the New York Yankees. The latter signing has been especially contentious since Jay Z took the famed Yankees superstar from high-powered sports agent, Scott Boras, one of sports' most successful and feared agents in the game.

In July, Jay Z took a shot at Boras on his song, "Crown," spitting the line "Scott Boras, you over baby/Robinson Cano, you coming with me." He also offered in an interview with New York's Power 105.1 that he thought that the field of sports management had grown complacent. "They get an artist, right, however they acquire the artist —I mean the athlete— they get them and they knock on the same doors," Jay said. "They go to Nike, they do the contract and they sit back. So they've been sitting around for 20, 30 years just not doing anything. So me coming in, that's a problem for them. Now they have to go to work."

Boras fired back earlier this week in an interview with the Wall Street Journal where he stated Hov's comments suggested that he did not understand baseball well enough.

"Anyone who thinks playing the game of baseball is like being an artist knows nothing about the game of baseball," Boras told the Wall Street Journal. "I don't worry about others, because you know what, in the end, as always, there are few survivors in [the agency] game. This game is something that when you come, and you look, and you don't see—when you don't see, you're not here long."

Boras also quipped that Jay-Z's signature Yankee blue hat is going to be a hinderance as a proper advocate for a player when Hov is negotiating with a team.

"When your agent wears a Yankee hat," he said, "how seriously are they going to take you?"

[Via Wall Street Journal]