MILWAUKEE - Earlier this week, after a stretch of games in which Boston Celtics big man Al Horford had bottled up the likes of Kristaps Porzingis, Ben Simmons, and Joel Embiid, Celtics coach Brad Stevens wanted to put the spotlight on a player who would never request upon himself. "A lot of names get thrown around, rightfully so, in the defensive talk around the league. There's a lot of really good defenders, but Al's up there, and doesn't always get mentioned, and that's okay with Al," Stevens said after Tuesday's win over the New York Knicks. "I think that he's kind of proven that he's OK with just contributing to winning and whether he gets talked about or not. But he was great on Simmons on Friday [and] he was unbelievable [Tuesday] on Porzingis." So when the Celtics trekked to Milwaukee on Thursday night for a rematch with a Bucks team that had spoiled Boston's home-opener, Stevens deployed Horford with a single mission: Do...