Simon (shoulder) was transferred to the 60-day disabled list Monday.

The move was procedural to open up a spot on the 40-man roster for the addition of Matt Magill from Triple-A Louisville. Simon's 2016 campaign has come to an end; the veteran will use the offseason to rehab and prove he's still worth a look as he enters free agency.

Simon will require season-ending surgery to address his ailing shoulder, Zach Buchanan of the Cincinnati Enquirer reports.

Simon's miserable season will end on an unfortunate note, as the surgery could inhibit his preparation for spring training. Considering he's 35 years old and coming off a major arm injury and a season in which he posted a 9.36 ERA over 58.2 innings, Simon, a soon-to-be free agent, may have to wait awhile before landing a contract this winter.

Simon aggravated his shoulder injury and will miss the remainder of the season, Mark Sheldon of MLB.com reports.

Simon has played just 15 games for the big club this season, over which he's posted a 9.36 ERA and 2.05 WHIP. Home runs also gave him trouble this season as he allowed 15 over just 58.2 innings, giving him a 2.3 HR/9.

Simon (shoulder) was activated from the DL on Monday.

Simon had been on the disabled list since June 22, but is finally ready to return to action. While on his rehab assignment, Simon allowed eight runs over 15 innings, good for a 4.80 ERA. He hasn't had much luck in with the big club this season either, as he owns a 9.45 ERA and 2.06 WHIP after pitching 53.1 innings.

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 probably will work in long relief, though a spot start or two could still come if/when the Reds shut down Brandon Finnegan.

Simon (shoulder) is beginning a rehab assignment with Triple-A Louisville on Sunday night.

It's unclear what role Simon will have upon his return, but the Reds probably will be looking to manage the innings of Brandon Finnegan and Cody Reed soon, among others. So it's not out of the question that Simon will get a few more starts before the end of the season.

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 doesn't really have a spot to return to, at least until an injury occurs or rosters expand in September. The Reds aren't in a hurry to bring him back.

Simon (shoulder) was placed on the 15-day DL on Wednesday.

Simon has been absolutely terrible this season for the Reds, going 2-7 with a 9.45 ERA and 2.06 WHIP. Now he will hit the disabled list and focus on rehabbing his shoulder. However, if the 35-year-old can't improve upon his return, his days with the Reds may be numbered.

Simon (shoulder) is not with the Reds for their two-game series in Texas, Zach Buchanan of the Cincinnati Enquirer reports.

Simon instead went to Cincinnati to get further examinations. The team returns home Thursday, but there's a good chance that Simon will go on the DL on Wednesday to make room for the team to activate Michael Lorenzen.

Simon is dealing with a shoulder injury that has seen no improvement despite being treated with medication, Zach Buchanan of the Cincinnati Enquirer reports.

Simon most recently pitched Wednesday, giving up five hits and three earned runs during just one inning of relief work. It's unclear if he's headed for a DL stint or a demotion, as the 35-year-old currently sits with a 9.45 ERA and 2.06 WHIP over 53.2 innings.

Simon has been moved to the Cincinnati bullpen, the Cincinnati Enquirer reports.

Simon had been pencilled in as Monday's starter, but manager Bryan Price will instead turn to the 25-year-old Daniel Wright to get the nod in that contest. This move isn't really all that surprising, as Simon's 9.11 ERA (7.18 FIP) was among the highest of all qualified starters, as he certainly didn't provide much cause for optimism during Wednesday's six-run outing against the Cardinals. The Reds' bullpen is one of the worst in the majors, but one has to question if adding Simon there is even a plus at this point.

Simon (2-6) was crushed by the Cardinals in Wednesday's loss. He pitched five innings, allowing six runs, seven hits and five walks while striking out three.

The ninth-year veteran's nightmare season continued as he failed to make it past the fifth inning for the ninth time in 12 starts. After winning 28 games over the past two seasons, Simon is performing at a level worthy of being replaced in the rotation. He's walking batters and giving up home runs at career-high rates -- a deadly combination for a pitcher. Two consecutive winning seasons shouldn't be enough to encourage owners that Simon will turn it around any time soon. At this point, there are very few leagues in which he holds value.

Simon allowed four runs on five hits and three walks while striking out six over seven innings in a win over the Rockies on Thursday.

Three of the five hits against Simon left the park, but two were solo shots, and the Reds' hitters gave him plenty of support against right-hander Eddie Butler. It was a successful outing by Simon's standards, but he's far too blowup prone to be a mixed-league option. He's barely on the fringes of NL-only consideration.

Simon only lasted four innings Saturday against Milwaukee, allowing three runs (two earned) on three hits and two walks while fanning only one.

Simon struggled once again, and he failed to complete the fifth inning when he was chased out of the game. His ERA ballooned to 9.60, and he had plenty of problems to find the strike zone after throwing only 32 of his 63 pitches for strikes. The 35-year-old veteran's next start will come Thursday against Colorado, although at this point it's not safe to trust him in any format considering his recent struggles.

Simon (1-5) coughed up five runs on nine hits and three walks in five innings Sunday while striking out only one in a 5-4 loss to the Mariners.

Incredibly, the outing actually lowered his ERA to 10.16. Simon remains a blight on the Reds' rotation, managing just two quality starts in nine trips to the mound while giving up five or more runs four times, but until pitchers like Anthony DeSclafani and Homer Bailey are ready to come off the DL, the team will likely keep trotting him out there to try and soak up some innings. His next start will come Saturday in Milwaukee.

Simon was clobbered for 10 runs on 14 hits and one walk over 4.1 innings in a loss to the Indians on Tuesday. He struck out two.

The Tribe absolutely teed off on Simon, who is now 1-4 with a 10.34 ERA and 2.11 WHIP through 31.1 innings. He had turned in back-to-back quality starts coming into Tuesday's outing, and manager Bryan Price gave no indication immediately following the game that Simon's rotation spot is in jeopardy, but it's going to be difficult for the team to keep him there for long. It's worth noting that the Reds' top pitching prospect, Cody Reed, is slated to start for Triple-A Louisville on Wednesday, so it would be relatively easy switch for the club when it decides the time is right.

Simon allowed three hits over six innings against the Pirates on Wednesday, and all three were solo homers. He struck out three, walked two and hit two batters en route to a no-decision.

This was a heated game, with the two teams combining to hit each other's batters six times and Simon playing no small part in that. Although he met the minimum standard for a quality start, this can't be considered that positive of an outing, considering that Simon has now allowed a stunning nine home runs in his last five outings after keeping the ball in the yard for the first two. He's always had problems with the long ball, but nine homers in 27 innings is a brutal rate. Even though his ERA came down in this one, it's still painfully high at 8.67, making Simon a player to avoid in fantasy circles.

Simon is now scheduled to start Wednesday after Tuesday's game was postponed due to rain.

Tuesday's rainout will not affect Simon, as he will simply move back a day to start the series finale against Pittsburgh. Simon has been mostly awful in the early going this season, but he did show some positive signs in his most recent outing, throwing a quality start against Milwaukee. It marked the first time this season Simon has gone more than even five innings.

Simon (1-3) notched his first win with 7.2 strong innings against the Brewers on Thursday, allowing three runs on seven hits and a walk while striking out five.

Expectations couldn't have been high for Simon entering this start -- he hadn't lasted longer than five innings yet this year and came in with a ridiculous 13.50 ERA. But these Brewers are often a user-friendly opponent, and Simon took advantage. Still, it wouldn't be advisable to trust him moving forward unless he shows a drastic turnaround from his early struggles.

Simon (0-3) gave up six hits, three earned runs, and four walks over four innings in Saturday's 5-1 loss to the Pirates.

The veteran hurler couldn't make it to the fifth inning for the fourth straight start, and surrendered a homer for the third consecutive appearance. His control problems were on full display as well, and Simon's WHIP is now up to a whopping 2.85 over 13.1 innings in 2016. He labored through 98 pitches over his relatively brief stint on the mound, his highest count in that category to date this season. After another ineffective start, Simon's grip on his spot in the rotation is looking increasingly shaky.