Wagner will have his left knee scoped Thursday and is expected to be sidelined from baseball activities for about a month, Keegan Matheson of MLB.com reports.
The 26-year-old was placed on the 60-day injured list Tuesday due to knee inflammation, and he'll undergo the procedure to address the issue. Wagner should have enough recovery time to be healthy for the start of spring training. He played well in his first taste of the majors this year and had a .305/.337/.451 slash line with two homers and 11 RBI in 24 games.