The San Diego Padres placed first baseman Phil Nevin on the 15-day disabled list on Sunday due to a strained left oblique. The empty roster spot was filled by outfielder Ben Johnson who was called up from (AAA) Portland. Johnson, 24, has played in 73 games for the Beavers, batting .299 with a team-high 17 home runs and is tied for the team lead with 49 RBI.