GREEN BAY, Wis. -- The Green Bay Packers are a pass-first offense, making it easy to overlook running back Ryan Grant. But if Grant can keep up his recent trend of strong late-season performances, the Packers will become even more potent on offense.

"When the weather is changing," said coach Mike McCarthy, "your attempts usually go up. You get leads, you're coming out of halftime with leads, you are running the ball more with those types of runs. I think it's just getting more opportunities frankly at this period in the season."

Grant ran 62 yards for a touchdown on Green Bay's first play from scrimmage at Chicago on Sunday, then scored a 1-yard touchdown in the fourth quarter to give the Packers a 21-14 victory over the Bears. Grant finished with 137 yards rushing, his second 100-yard game in the Packers' current five-game winning streak.

"We've changed offensively just with the way we approach the game as far as the run/pass-type things we do with Aaron (Rodgers)," McCarthy said. "I think that may have affected Ryan's opportunities more, and just really the way defenses are playing us."

Grant said he doesn't expect the Packers to abandon their passing game as the weather turns cold. But going into Sunday's game at Pittsburgh, Grant knows his running can make life easier for the Packers' talented wide receivers.