The NBA’s lightweights got the message Thursday: If you’re going to compete with the heavyweights, you’ve got to get bigger.The Phoenix Suns and Sacramento Kings made 7-foot Deandre Ayton of Arizona and 6-11 Marvin Bagley III of Duke the tallest tandem of 1-2 picks since 2006 when they began a run on big men at the top of the 2018 NBA Draft.Ayton, the No. 1 overall selection, brings a sturdy, 260-pound frame to the middle of a Suns defense that ranked last in the NBA in points allowed en route to the NBA’s worst record during the 2017-18 season. The 19-year-old ranked among the national leaders in rebounds (11.6 per game) and blocks (1.9 per game) last season as a one-and-done freshman.A native of the Bahamas, Ayton will begin his pro career right around the block from where he attended Hillcrest Prep Academy before heading 100 miles down the road to Tucson, where he led the Arizona Wildcats to a 27-win season and as high as a No. 2 national ranking.”The fans out there are amazing, the best fans in the world,” Ayton said shortly after the announcement of the selection in New York. “I’m really happy to be a Phoenix Sun and start a winning legacy with Devin Booker and Josh Jackson and all the other guys. We’re a young team and we’re ready.”Bagley, meanwhile, adds a versatile frontcourt presence to a Kings team that scored the fewest points in the NBA last season.