Corey Hart (hamstring) is expected to miss 4-6 weeks. Hart suffered a Grade 2 left hamstring strain on Sunday and was placed on the 15-day disabled list Tuesday afternoon. The veteran outfielder was batting just .209 with a .647 OPS this season for the Mariners, but he did have five home runs and 17 RBI in 37 games. That power will be dearly missed in the Seattle lineup.