The 2017-18 NBA season begins on Tuesday, with Boston Celtics point guard Kyrie Irving making a quick return to Cleveland and Houston on the road against defending champions the Golden State Warriors. Irving's trade request and subsequent move to Boston was one of many high-profile switches during the close-season and while the Eastern Conference was a little more subdued than the West, there was still plenty of intrigue. Can anyone unseat the Cavs in the East?