The Erie SeaWolves won’t open the season until Thursday but they alreaady had to make a roster move. Dixon Machado will begin on the season on the disabled list, effective April 4. Infielder Brandon Douglas has been added to Erie’s roster in place of Machado. Douglas spent the past two seasons with the SeaWolves and part of the 2008 and 2010 seasons. The second baseman hit .263 with 23 doubles, 48 RBIs and 13 stolen bases in 131 games with Erie last year.