Three-game road tripThe Thunder has four games this week. The final game of a four-game homestand tonight has major playoff ramifications, and is followed by a three-game road trip. Tonight: Portland. They’ve split two meetings, the road team winning both times. The Thunder can clinch the season tiebreaker with a win. Tuesday: at Philadelphia. The Sixers have been a better road team than home (11-24). Their only home win the last month was against New Jersey. Wednesday: at Boston. Written off as too old, the Celtics have gone 6-1 the past two weeks, highlighted by wins over Dallas and Denver. Saturday: at Dallas. The Mavericks reeled off 13 consecutive wins after a loss in the Ford Center but have cooled off the past two weeks.