The NBA champion Boston Celtics and Western Conference leaders Oklahoma City continued their march to the playoffs on Saturday as the Los Angeles Lakers bounced back with a win over the Memphis Grizzlies.Desmond Bane scored 29 points, Jaren Jackson Jr. added 24 and Ja Morant -- back from a six-game injury absence -- contributed 22 for Memphis, but the Grizzlies suffered their third loss to the Lakers this season, giving Los Angeles the tiebreaker edge if needed in the playoff race.