Green Bay Packers running back Eddie Lacy knows he won't sneak up on anyone this year.

Not after being named the NFL Offensive Rookie of the Year last season when he rushed for 1,178 yards and 11 touchdowns.

"There's no such thing as good enough," Lacy told Wisconsin reporters. "As long as I'm able to just go out and perform, whether it's just as good as last year or a little better or a little worse, to me as long as my play is helping the team in a positive way, that's all I really care about.

"I just need to regain focus. Don't let what I did last year flow over into this year. It's a new team, it's a new season and a new year pretty much."

Lacy is a powerful back at 5-foot-11, 230 pounds. And defenses will gear up to try to stop him this year.

"I know it's going to be a lot tougher than last season," Lacy said. "But we have the greatest quarterback in the NFL, and with him being back there, it's not just like they'll be able to stack the box and focus on me. They have to play him, because if not, he's just going to kill them through the air. So I still think I have a bit of breathing room.

"I think it will be tougher, because it's not like you're surprising everyone. When you first come in, people doubt you. They know what you did in college, but they don't know if it will translate to the next level. But once you get that year in and people see what you've done and it's no longer surprising, they're going to prepare for you the way they prepare for whoever else is good at that position."

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Aaron Wilson covers the Ravens for The Baltimore Sun