LOS ANGELES — As the Southern California sky slowly fades to black on Friday night, Marcus Byrd paces back and forth just outside the players' locker room at the Riviera Country Club. At 6 over after 34 holes, Byrd is going to miss the cut at the Genesis Invitational, where he received the tournament's Charlie Sifford exemption from Tiger Woods, but he can't leave. The second round was suspended because of darkness, and now the logistics of a return to the course Saturday morning to play two remaining holes before then heading off to Florida for his next tournament await the 25-year-old.