LOS ANGELES -- Oops, it happened again.
The WNBA has been forced to shift another playoff series because of an arena conflict.
This time, the conflict moves the Los Angeles Sparks out of Staples Center because of a Britney Spears concert and a heavyweight title fight.
The Sparks will instead host the Phoenix Mercury in the Western Conference finals at UCLA's Pauley Pavilion.
Spears has booked Staples for Wednesday, and Vladimir Klitschko and Chris Arreola will hold their WBC bout there Saturday.
The Atlanta Dream shifted their playoff game against Detroit last Friday night from the downtown Philips Arena to the suburban Gwinnett Arena because of a conflict with a "Sesame Street" show.