The wager started with Ray Allen.

Still that wasn't enough for Miami Heat guard Mario Chalmers. He needed higher stakes so he also included LeBron James and Dwyane Wade.

The bet: lose 10 pounds in a week.

No problem for Chalmers who completed the task with ease to answer the challenge of his future Hall of Fame teammates. The finished product has Chalmers in the best shape of his career entering his sixth season.

"[The bet] started with Ray" Chalmers said. "Ever since then I just got a little extra push. I've just been working harder. We wanted to three-peat. They all said 'We need you to be the head of the team you need to be in tip-top shape and we need you to lead by example.' "

The weight loss was overshadowed during training camp because of Allen's physique gaining all the attention. Chalmers too put in the offseason work. He eliminated fried foods and soda from his diet dining more on salads.

"I still have a lemonade here and there but not as much as I used to" Chalmers said.

The rapid shedding caused strength and conditioning coach Bill Foran to jokingly say Chalmers lost "too much too fast." The positive results are already showing.

"It's worked out pretty good actually" Chalmers said.

"I feel a lot faster. It helps me get to different spaces on the court and small cracks easier. [Losing the weight] was more of a conscious thing of winning helping the team. It wasn't an individual bet but what can I do to help the team get better."

James added: "It's made him a little quicker. It's made him a lot quicker actually. It's going to help us out this year."

The preseason has also been more enjoyable for Chalmers because he's playing mostly injury-free. With the exception of a minor hip pointer he has been healthy. Last year he was bothered by a strained quadriceps and dealt with ankle problems the previous two training camps.

"It feels good to be healthy" Chalmers said. "I'm able to go full speed."