Since they've rarely been out of contention, the free-falling Atlanta Braves have seldom had to undergo a rebuilding effort over the past two and a half decades. Looking toward the future late in a lost season, the Braves are expected to bring up Cuban sensation Hector Olivera on Tuesday night against the visiting Miami Marlins. The 30-year-old Olivera was viewed as the prized acquisition for Atlanta when it traded top prospect Jose Peraza and Alex Wood to the Los Angeles Dodgers on July 30.