Simon (personal) will start Tuesday against the A's, James Schmehl of MLive.com reports. Simon left the team earlier in the week to tend to a personal matter, but will make it back in time for his next scheduled start. The 34-year-old is 5-2 with a 2.67 ERA in 57.1 innings so far this year, but his groundball rate is down more than eight percent from last year and his swinging-strike rate currently sits at 7.6 percent.