Roy Halladay took perhaps the biggest step so far in his rehab from a strained lat muscle behind his shoulder when he threw Friday for the first time since suffering the injury May 27.

The Phillies planned to have Halladay go three weeks before throwing. He threw two days early, making 30 tosses from 60 feet to Phillies pitching coach Rich Dubee with head trainer Scott Sheridan watching.

Halladay said he wanted to get two throwing sessions in before the team's off-day Monday.

"I felt good," Halladay said. "This is one of the steps. The other (steps) have been good so far, so we'll go from there."

Dubee was more effusive, saying Halladay "felt better than he expected."

Halladay said he'll throw again Sunday, doing pretty much the same regimen. He said if that goes well, he'll bump up his throwing session Tuesday.

The Phillies said Halladay would miss six to eight weeks. Halladay indicated that timeframe probably won't change much, if at all.

"I've still got a long ways to go," Halladay said. "It's just one of the parts of it. I want to pitch. I'll be anxious to get out there and pitch. That's the big one."