"One: It's a month (away). And then, two, it's just how I feel, and how it's progressed," Griffin said. "Over the last three weeks, I've had a lot of progress and I feel a lot better. ... While training camp's a month, month and a half away ... I feel really good about that. And then the start of the season is even farther than that. ... That's why I say 'without a doubt.' "