He needed just two days to change that.
With a push from good buddy Dale Earnhardt Jr., Hamlin stole the victory in the non-points Budweiser Shootout to rocket into NASCAR stardom.
Four years later, he considers that victory one of the greatest accomplishments of his short career.
Only problem? In Hamlin's mind, he's done very little to back up that breakthrough win.
"That's the thing -- when you have so much early success, it can be hard to fall off that mountain," Hamlin said. "If we would have come in during my rookie year and struggled a little bit, then we could have looked at the last two years and said, 'Hey, we're getting better. We're heading to where we need to be.'
"Now it just seems like we had that early success, and then we just kind of maintained over the last couple of years."
Nevermind that Hamlin has stats many drivers only dream of, winning four races and notching 59 top-10 finishes through his first three seasons. He also earned a coveted spot in the Chase for the Sprint Cup championship all three years.
He was a career-best third in the final 2006 standings, raising expectations that he was on the verge of becoming a serious championship contender. Instead, he sunk to 12th and eighth the next two seasons and has yet to sniff a NASCAR title.
It's made Hamlin eager to correct past mistakes and make 2009 the year to remember. His bid to turn it up a notch begins Saturday night with the Shootout, the unofficial start to the season.
"I expect more from myself than that," Hamlin said of his first three years. "I've been successful at so many different levels. ... When you win one out of every four or five races or something like that, you wonder, 'Why can't that happen in the Cup Series?' What I don't like to hear is: 'You've got a lot of potential.'
"It's my fourth year. It's time to be a champion. Not a guy that contends."
His timing couldn't be better.
Stewart's 10-year run with JGR is over, leaving the organization with a huge hole to fill both on and off the track. The two-time Cup champion was the leader of the team and an experienced voice the younger drivers could turn to.
Without him, they head into this year with 23-year-old Kyle Busch and 18-year-old rookie Joey Logano -- leaving the 27-year-old Hamlin to joke about his status as the team's elder statesman.
"The thing that keeps J.D. and Joe awake at night -- I will be your senior driver next year," he said to team owners Joe and J.D. Gibbs during last year's season-ending awards ceremony.
At the time, he said, it was a terrifying thought.
But something has clearly shifted in Hamlin, who insists he's ready to lead.
"Denny, to me, really, really has matured," Joe Gibbs said last month.
The change likely came after his very public meltdown last August in Michigan.
His motor failed with six laps to go, resulting in a 39th-place finish that put his berth in the Chase field in jeopardy. He publicly criticized JGR's engine department and crew, creating hard feelings among the people he depends on to give him quality race cars.
"That was a tough week," crew chief Mike Ford admitted. "We had some double throwdown and not-so-friendly meetings. The next couple of weeks were very difficult."
But it was the breakdown the team needed to move forward.
"From that, a lot of lessons have been learned all around. Communication has been better," Ford said. "Until you hit the floor and stand back up, you're not going to move anywhere and be able to share an experience."
Ford and Gibbs insist they've seen a change in Hamlin, a sometimes moody driver who often kept to himself and friends instead of interacting with his race team.
"I saw kind of a different Denny after that," Gibbs said. "Sometimes when things happen we disappoint ourselves, we learn from it. I thought he learned from it."
Earnhardt, who befriended Hamlin years ago and invited the up-and-coming driver to Daytona as his guest in 2004 when he won the 500, believes Hamlin is too hard on himself.
And while many believe Hamlin made foolish, immature decisions that distracted him the past several years, Earnhardt said Hamlin has nothing to regret.
"The damn kid was running a late model, what, three or four years ago? Here he is with a great team, good job, making money, living in a nice house. Basically he has the world in the palm of his hand," Earnhardt said. "Everybody makes personal mistakes and learns a little bit about being more mature, what to say and don't say. He is just too critical of himself. He is real hard on himself. He puts a lot of pressure on himself to compete at a certain level. He feels like he should be there every week.
"I know he wants more. That is the sign of a true racer and he will get it."
Hamlin has taken off-the-track steps toward proving himself, putting his bachelor pad North Carolina lakefront home on the market in a bid to remove temptations. He's also become more selective with his schedule, resisting the urge to sign up for everything that came with a paycheck.
And in a bid to give something back to fans, he's promised to buy four tickets to every race this season and give them away through his web site.
"The sport changes you. You don't want to change, but it does change you," he said. "It's all about staying focused. And you can't take things for granted."
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