"We will not look at him again for this week," Harbaugh said. "We'll look at him for the playoffs. It's a 12 to 16-week injury. So if you do the math going back, we thought there was a chance. He's progressing really well.
"I'm not saying he couldn't have played the past couple of weeks, but it would've been risky to re-injure it. The fact that there was some patience on Ray's part and our part, it turned out well."
The two-time former
Lewis has been sidelined for the past nine games and has been champing at the bit to get back on the field.
Lewis has been practicing and hasn't experiencing any setbacks, but is dealing with atrophy to his right triceps muscle.
"It's hard, he wants to play," Harbaugh said. "Nobody wants to play more than Ray, but Ray sees it for what it is and he sees the big picture."
When asked if Lewis could potentially return in time for the Ravens' opening-round playoff game, Harbaugh replied: "There's always a chance. We can't say right now for sure."