Saturday was about what Miami Heat center Bam Adebayo thinks he is, as well as what he could be. At the morning shootaround at TD Garden, the Adebayo conversation was about failing to break through in the voting for NBA All-Defense, relegated to the second team for the third consecutive season, yet to make the first team over his five years. Back at the same venue eight hours later, Adebayo turned his focus to the other end of the court, closing with 31 points in the 109-103 victory that gave the Heat a 2-1 lead over the Boston Celtics in the best-of-seven Eastern Conference finals. “Same old play calls,” Adebayo said of finishing one point off his career playoff high, “just different mentality.” It was a mentality of necessity, with forward Jimmy Butler lost for Saturday night’s second half due to knee soreness. With point guard Kyle Lowry working off rust in his first game in two weeks as he deals with a hamstring strain, and with guard Tyler Herro remaining off his game on a 4-of-15 night, scoring was at a premium for the Heat. So Adebayo showed a premium side of his game that had yet to be exposed in the series, after scoring a combined 16 points in the opening two games at FTX Arena. “He did his version of what Jimmy does, in terms of, ‘do what’s necessary for the game,’ " coach Erik Spoelstra said, with the Heat taking Sunday off ahead of Monday’s 8:30 p.m.