The Mariners have claimed outfield prospect Jacob Hannemann off waivers from the Cubs, reports Mark Gonzales of the Chicago Tribune (on Twitter). MLBTR had just reported that Hannemann would lose his 40-man roster spot, though it seems that his removal and subsequent placement on waivers was already in the works. He’ll land on Seattle’s 40-man roster. The 26-year-old Hannemann has split the 2017 season between Double-A Tennessee and Triple-A Iowa, hitting considerably better at the more advanced of those two levels. Through 322 PAs with Iowa, Hannemann has slashed .265/.324/.404, though his rough stretch in Tennessee drags his cumulative batting line down to a less palatable .240/.312/.372.