LeBron James had yet to claim an NBA championship when he arrived in Miami two years ago, boldly predicting multiple title runs with Heat teammates Chris Bosh and Dwyane Wade.
Now, as the NBA prepares to open its 67th season on Wednesday, "King" James is coming off a crowning achievement, having won his first NBA title with the Heat last June and then guiding the US Olympic team to London gold in August.
Now the Heat look to repeat and James, whose spectacular high-leaping skills have made him the NBA's most dynamic playmaker since Michael Jordan won six titles with Chicago in the 1990s, vows to back up his boasts and prove he is no one-hit wonder.
"I've accomplished a lot of goals but I'm still not satisfied with what I've done so far," James said.
"We can be better than we were this past season. We have the potential to be a lot better. That is scary."
The Heat have added 37-year-old guard Ray Allen, the all-time NBA leader in 3-point shots who must face his former Boston teammates when they visit for Tuesday's opener, and veteran forward Rashard Lewis to a championship roster.
"You can feel the excitement," Wade said. "You can see the difference."
James matched Jordan as the only players in history to win an NBA title, Olympic gold and be named the NBA regular-season and NBA Finals Most Valuable Player (MVP) in the same year.
"I don't think about what the other greats have accomplished," James said. "I have to make my own name."
Across the continent, Kobe Bryant will try to match Jordan's career title total with a revamped Los Angeles Lakers' lineup that includes new big man Dwight Howard and star guard Steve Nash, both seeking their first NBA crowns.
"Dwight's defensive presence is probably the greatest I've seen in the history of the sport," Bryant said.
"Steve's a great playmaker. Steve's IQ and ability to quarterback, it's not something I can naturally do.
The Lakers and Heat must still contend with the Oklahoma City Thunder, powered by three-time NBA scoring champion Kevin Durant and star guard Russell Westbrook, although they'll be without last season's NBA Sixth Man of the Year James Harden.
Harden was traded on the eve of the season to Houston, where he'll join a team hoping Taiwanese-American star Jeremy Lin can continue to work the magic he showed last year with the Knicks.
While the Thunder's young stars are the NBA's wave of the future, San Antonio remains in the title hunt with veterans Tim Duncan, France's Tony Parker and Argentina's Manu Ginobili while the Los Angeles Clippers are on the rise with All-Stars Blake Griffin and Chris Paul and veterans Chauncey Billups and Lamar Odom.
The Celtics remain a power in the East with Kevin Garnett and Paul Pierce and guard Rajon Rondo while the Chicago Bulls could still threaten despite Derrick Rose still sidelined by a left knee injury suffered in last season's playoff opener.
New York boasts Carmelo Anthony, Amare Stoudemire and Tyson Chandler but the Knicks will have some new cross-town competition in the Brooklyn Nets, who move from New Jersey into a new $1 billion arena and have some firepower of their own in Deron Williams and Joe Johnson.