The A’s are calling up left-hander Gage Jump, reports Jeff Passan of ESPN. The 23-year-old is among the top prospects in the organization. When he first appears in a game, it will be his MLB debut.

MLB Pipeline ranks Jump at No. 3 in the Athletics system. FanGraphs‘ Eric Longenhagen has him only behind shortstop Leo De Vries. Jump has a mid-4.00s ERA at Triple-A this season, but he’s delivered a hefty 33.1% strikeout rate. The

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