The Miami Heat returns to the court for the start of training camp Tuesday. The focus of the fourth part of the series is power forward. James Johnson is expected to start at the position, with big men Kelly Olynyk and Bam Adebayo as his primary backups. The only other power forward pretty much guaranteed to make the roster is 38-year-old Udonis Haslem, who will play more of a leadership role than an on-court one as a team captain and 15-year NBA veteran. Undrafted rookie power forward Yante Maten, signed to a two-way contract, can have his deal switched to a standard contract if he really impresses in the preseason.