Clockwise from top left, Boston Red Sox infielder Dave Roberts, Boston Bruins right wing Mark Recchi, New England Patriots cornerback Darrelle Revis and Boston Celtics center Bill Walton.

The Lakers aren’t the first L.A.-based team that Walter has purchased. He’s been the controlling owner of the Los Angeles Dodgers since 2012, during which time they’ve won 11 NL West titles ...