Gregg Popovich views Danny Green as the poster boy for the Spurs’ pounding the rock ethos. Green announced his retirement from the NBA last week after 15 seasons, including an eight-year run with the Spurs highlighted by helping the team win a championship in 2014. He also won titles with Toronto in 2019 and the Los Angeles Lakers in 2020. “He worked for it,” Popovich said Saturday of Green, 37.