BOSTON -- The Celtics have secured the No. 1 seed in the Eastern Conference playoffs. Boston overcame a sluggish start to top the Milwaukee Bucks 112-94?on Wednesday night at TD Garden. With a record of 53-29, the Celtics finished two games ahead of a Cleveland Cavaliers team that prioritized rest in the final days of the regular season. Even before the Celtics finished off a dominant fourth quarter against the Bucks, the Cavaliers lost to the Toronto Raptors? 98-83 to ensure Boston's top spot. The Celtics will host the eighth-seeded Chicago Bulls in the opening round of the playoffs, beginning Sunday (6:30 p.m. ET, TNT). The teams split their regular-season series 2-2.? "They're the eighth seed, but they're better than what seed they are," Celtics guard Isaiah Thomas?said after Wednesday's win. "They're a really good team, especially with Dwyane Wade back [from a broken elbow]. So we have to be ready for...