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08/10/08 3:31 PM ET

Colon dominant in PawSox rehab start

Hurler throws three shutout frames; return to Boston will wait

CHICAGO -- In a dramatic improvement from his first Minor League rehab start five days earlier, Bartolo Colon fired three shutout innings for Triple-A Pawtucket on Sunday.

In a game against Charlotte, Colon allowed three hits and no walks while striking out three.

Colon threw 34 pitches, 27 for strikes.

Coming back from a back injury that placed him on the 15-day disabled list on June 17, Colon is being put on a Spring Training-type progression by the Red Sox.

He will make at least a couple of more starts before resurfacing in the Boston rotation.

In Colon's first rehab outing Monday, he lasted just two-thirds of an inning, giving up four hits and three runs.

For the Red Sox this season, Colon is 4-2 with a 4.09 ERA in six starts.

Ian Browne is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.