Simon (shoulder) was transferred to the 60-day disabled list Monday.
Simon will require season-ending surgery to address his ailing shoulder, Zach Buchanan of the Cincinnati Enquirer reports.
Simon aggravated his shoulder injury and will miss the remainder of the season, Mark Sheldon of MLB.com reports.
Simon (shoulder) was activated from the DL on Monday.
Simon (shoulder) will pitch again on his rehab assignment Monday for Triple-A Louisville, but should be ending his assignment soon and joining the big club after September roster expansion.
Simon (shoulder) is beginning a rehab assignment with Triple-A Louisville on Sunday night.
Simon (shoulder) has been throwing bullpen sessions while the Reds were traveling the last week, but could throw live batting practice sessions this week, the Cincinnati Enquirer reports.
Simon (shoulder) was placed on the 15-day DL on Wednesday.
Simon (shoulder) is not with the Reds for their two-game series in Texas, Zach Buchanan of the Cincinnati Enquirer reports.
Simon is dealing with a shoulder injury that has seen no improvement despite receiving medication, Zach Buchanan of the Cincinnati Enquirer reports.