BOSTON (AP) – The owners of the Boston Red Sox, in an effort to boost revenue for their quest of a World Series championship, are launching a series of business efforts that could include ownership of another professional sports team.

“We’re very aggressively looking at investments in a variety of different sports,” said Mike Dee, the team’s chief operating officer and president of Fenway Sports Group, a Red Sox spinoff formed last March.

Under Major League Baseball rules, the Red Sox are prohibited from owning an interest in another baseball team, but Dee said teams in all other sports are under consideration. He also indicated that 100 percent ownership of a team was unlikely.

“The core business is baseball, and it will always be baseball,” he said Monday.

Meanwhile, Fenway Sports plans to unveil a pair of advertising deals with Major League Baseball, and a major stadium signage firm.

In the MLB deal, Fenway Sports will sell ads for the league on the 30 ballclub Internet sites it runs, Dee said. In the signage deal, Fenway Sports will sell ad space on behalf of ANC Sports Enterprises LLC, a New York company that owns several rotating displays in MLB stadiums.

Also, Fenway Sports has hired photographers to take pictures of fans in the stands at big league ballparks. Dee said images are sold to fans online, with the photos being put on everything from T-shirts to mugs.

Fenway Sports also is considering the purchase of radio stations in New England that could broadcast Red Sox games.

“We want to put ourselves in position to compete every year for the World Series,” Dee said. “We need to look down to the south (at the New York Yankees), and that’s who we are competing against year in and year out.”

The Yankees and the Red Sox generate the highest revenues in the American League, respectively $238 million and $190 million in 2003, according to Forbes magazine.

The new venture is expected to break even by the end of 2005, and generate tens of millions in the future, Dee said.

The New York Times Co., owner of The Boston Globe, owns 17 percent of the Red Sox parent company, New England Sports Ventures.