Instead of deepening his ties to Boston, a place he still appreciates greatly (the Bucks play Thursday in Memphis, but he kept them here in the interim), Doc Rivers has gathered stamps on his NBA passport. There will thus be quite a few transitional paragraphs when his legacy is written. After playing for four teams, he’s now coached five. “Everywhere I’ve gone, I’ve won,” he said when discussing his bench career in perspective. “S***, I got fired in Philly, and we were .653 (regular season winning percentage, 154-82) in the three years I was there, you know what I mean? So, like, I’m fine with my legacy. I’m eighth in (NBA career) wins, fourth in playoff wins, so I’ve got a great legacy. But I want more. That’s why I’m still doing it.”