Roy Halladay throws off flat ground

TORONTO -- Philadelphia Phillies right-hander Roy Halladay threw off flat ground Friday, the first time he's thrown since going on the disabled list last month with a strained muscle in his back.

The two-time Cy Young Award winner threw 30 times from 60 feet in an easy game of catch with pitching coach Rich Dubee. He'll do the same thing Sunday and could increase his workload in a third throwing session scheduled for Tuesday.

Halladay, 4-5 with a 3.98 ERA in 11 starts, was placed on the 15-day DL on May 29, two days after he was pulled from a start in St. Louis after just two innings because of shoulder soreness. He's expected to miss between six to eight weeks.

Also Friday, Chase Utley played four innings at second base and had five at-bats in an extended spring training game. Utley has not played this season because of chronic tendinitis in his left knee.