PHOENIX — The Father’s Day video posted Sunday stretched nearly nine minutes, and it was awesome. Phoenix Suns star Devin Booker walked with his dad in the Flagstaff High School gymnasium toward a rack where seven jerseys hung. All revealed Booker’s new jersey number — 15. Melvin Booker appeared touched. He had worn 15 during his college days at Missouri, where he was an All-American guard as a senior. “I don’t even know what to say, son,” Melvin Booker said in the video.