The WNBA has signed a long-term deal with Boost Mobile that will put the cellphone company's logo on most teams' jerseys.

It is the latest jersey deal for the WNBA, following in the footsteps of many soccer teams and NASCAR, which has corporate logos on its race cars and the drivers' jumpsuits.

The Liberty have the logo of Foxwoods, a casino, on their jersey. Last year, Microsoft signed a multiyear agreement with the Seattle Storm, who play near the computer giant's headquarters. In 2009, the Phoenix Mercury and the Los Angeles Sparks signed agreements with LifeLock and the Farmers Insurance Group. The Connecticut Sun bear the name "Sun," also the name of the Mohegan Sun.

But the deal with Boost Mobile, a pay-as-you-go cellphone operator, is leaguewide. The company's logo will be on the jerseys of 10 of the league's 12 teams. (The Mercury and the San Antonio Silver Stars already have deals with cellphone companies, so they will be excluded.) Boost Mobile will also have its brand on display on courts and outside arenas.

The company and league declined to provide specifics on the deal's worth. But the WNBA said it was the richest in the league's 15-year history. Boost Mobile will become the league's only "marquee" sponsor.

Steve Gaffney, vice president for corporate marketing at Boost Mobile, said his company was attracted to the WNBA because the league attracted the young, urban, multicultural fans whom the cellphone company considers its core customers.

''With the WNBA, we feel we hit the nail on the head," he said.

Though corporate branding on jerseys has been shunned by many major leagues in the United States and Canada, women's leagues have tried to find new sources of income, especially in the past few years when sports marketing dollars have been harder to come by.

"We're in our 15th year, and we are really looking towards our next 15 years," said Laurel J. Richie, the WNBA president.