Sea Dogs pitcher Brandon Walter delivers a pitch against the Reading Fightin Phils on Thursday at Hadlock Field in Portland.

The Portland Sea Dogs celebrate after winning the first game of a doubleheader with Reading on Thursday at Hadlock Field in Portland.

David Hamilton advances to third on a Fightin Phils error on Thursday at Hadlock Field in Portland.

Sea Dogs pitcher Brandon Walter throws against the Fightin Phils on Thursday at Hadlock Field in Portland.

Nick Sogard of the Sea Dogs safely steals second base as Sal Gozzo of the Fightin Phils tries to apply the tag on Thursday at Hadlock Field in Portland.