The only stars at the AT&T Pebble Beach Pro-Am this year will be the players. (AP Photo/Tony Avelar, File)The only stars at the AT&T Pebble Beach Pro-Am this year will be...

(CNN) - Grammy award-winning singer Ciara and rap star Macklemore of "Thrift Shop" fame have joined Seattle Sounders' new ownership group. Ciara's husband Russell Wilson,...