Kopech underwent successful Tommy John surgery Tuesday.

Kopech (elbow) was placed on the 60-day disabled list Saturday.

Kopech has a UCL tear and has been recommended for Tommy John surgery, Scott Merkin of MLB.com reports.

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Chicago White Sox rookie starter Michael Kopech was pitching fine until the fourth inning of Wednesday's game against the Detroit Tigers. In that inning, Kopech allowed six hits, three home runs, and six runs before being yanked. He finished with a line of 3 1/3 innings, allowing seven runs on nine hits, with one walk and six strikeouts. Kopech has started his Major League career on a high note, but simply struggled with command on Wednesday. The disastrous inning put his season ERA up to 5.02, even though he only allowed one run in his 11 innings prior to this game. He has a great matchup against the Kansas City Royals next Tuesday and should be started with moderate confidence.

Kopech (1-1) took the loss Wednesday as the Tigers tamed the White Sox 10-2, coughing up seven runs on nine hits -- including four home runs -- and a walk over 3.1 innings while striking out six.

Kopech did not factor into the decision Friday when he allowed one hit and one walk while striking out one over three scoreless innings in a 6-1 win over the Red Sox.

Kopech (1-0) allowed one run on seven hits while striking out four across six innings as he notched the victory Sunday against the Tigers.

Kopech, who made his major-league debut Tuesday, will next start Sunday against the Tigers, Daryl Van Schouwen of the Chicago Sun-Times reports.

Kopech struck out four in two scoreless innings Tuesday against the Twins, issuing three hits and no walks.

Kopech was called up from Triple-A Charlotte on Tuesday to start against the Twins.

Kopech will make his major-league debut Tuesday against the Twins.

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Chicago White Sox pitching prospect Michael Kopech will make his big league debut on Tuesday versus the Minnesota Twins. Kopech is 7-7 with a 3.70 ERA in 24 starts for Triple-A Charlotte. Kopech also struck out 170 batters in 126 1/3 innings. Kopech should be swooped up in most leagues due to his high upside and ability to strikeout hitters.

Kopech pitched seven scoreless innings and didn't walk a batter while striking out nine Saturday for Triple-A Charlotte.

Kopech allowed two runs on eight hits while striking out nine with no walks over seven innings for Triple-A Charlotte on Sunday.

Kopech allowed two runs on four hits and two walks while striking out eight over seven innings for Triple-A Charlotte on Tuesday.

White Sox general manager Rick Hahn wants to see more from Kopech at Triple-A Charlotte before elevating the right-hander to the major-league roster, Tom Musick of the Chicago Sun-Times reports.

Kopech allowed one run on four hits and one walk while striking out 11 over six innings for Triple-A Charlotte in Saturday's win over Durham.

Kopech allowed four runs on three hits, four walks and a hit batsman while striking out six over three innings for Triple-A Charlotte on Thursday.

Kopech allowed three runs (one earned) on three hits and four walks while striking out eight for Triple-A Charlotte on Saturday.

Kopech allowed four hits and walked two while striking out nine over six scoreless innings for Triple-A Charlotte on Monday.

Kopech (3-5) allowed three runs (two earned) on four hits and four walks while striking out six, earning the win for Triple-A Charlotte on Wednesday.

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Chicago White Sox pitching prospect Michael Kopech received a big vote of confidence on Thursday. The team's player development director Chris Getz said, "We have a chance to see him [in Chicago in 2018]. He's going to find his way to [the] big leagues. I'm very confident he's going to be a frontline-type starter." Getz mentioned Kopech's command of his fastball as a key to his progression. Kopech has struggled with his control this season. He walked four in his most recent game but struck out six. All in all, dynasty owners waiting for Kopech to make the leap have to be pleased with this recent news. If his control issues get better, the highly-touted prospect might be entering the relevant fantasy radar sooner rather than later.

Kopech allowed five runs on two hits and a season-high eight walks for Triple-A Charlotte on Thursday.

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Chicago White Sox pitching prospect Michael Kopech allowed eight walks Thursday evening for Triple-A Charlotte. Kopech only went three innings in the contest and allowed two hits and five runs. He also struck out two. Kopech has cooled off since his hot start to the season and has had command issues with 20 walks over his last five starts. Kopech remains one of the more exciting pitching prospects in the game due to his ability to touch 100 mph on the radar gun, but he will need better command before the White Sox promote him to the big leagues. General manager Rick Hahn spoke earlier in the week and said the White Sox would be patient and do what's best for the development of their top prospects. Kopech should debut in 2018, but it is unlikely to be as soon as fantasy owners would like. He remains a nice stash in redraft leagues and should already be owned in dynasty leagues.

Kopech allowed two runs on five hits and five walks while striking out 10 over six innings for Triple-A Charlotte on Friday.

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Chicago White Sox top pitching prospect Michael Kopech had a rough outing Saturday for Triple-A Charlotte. In two innings he allowed seven runs on five hits. He also allowed four walks while striking out two hitters. Kopech has struggled of late and his ERA was raised to 4.89 after the rough outing. He remains one of the best pitching prospects and should offer good strikeout numbers when he does reach the big leagues. Kopech is a strong stash in all formats as he should be up with the White Sox at some point this season.

Kopech allowed seven runs on five hits and four walks while striking out two over two innings for Triple-A Charlotte on Saturday.

Kopech allowed two runs on three hits and two walks while striking out seven to earn his second win of the season for Triple-A Charlotte on Monday.

Kopech (1-2) allowed two hits and two walks while striking out nine over seven scoreless innings for Triple-A Charlotte on Friday.

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Chicago White Sox starting pitching prospect Michael Kopech is likely headed for a mid-July call-up to the Majors, according to the Daily Herald's Scot Gregor. Kopech, 22, has been pitching this season for AAA Charlotte in the International League. Kopech has made seven starts for Charlotte, posting a 0-2 record with a 4.86 ERA. However, he's been unlucky, as evidenced by his 3.59 FIP. Kopech has great strikeout stuff, as shown by his 11.9 K/9 ratio this season, but he still has an opportunity to work on his control, as he's currently averaging 4.6 walks per nine innings. Given this news, Kopech might be worthy of a stash in deeper redraft leagues. He's a dynasty league stud.

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The Chicago White Sox, who currently sit in last place in the American League Central, are in no hurry to rush outfield prospect Eloy Jimenez and pitching prospect Michael Kopech to the big leagues. It appears that the White Sox want to make sure that when Jimenez and Kopech are called up, that they are up for good. Jimenez is hitting a whopping .320 with seven home runs and 25 home runs in just 103 at-bats for Double-A Birmingham. Kopech has 44 strikeouts in 33 1/3 innings with a 4.86 ERA for Triple-A Charlotte. Both Kopech and Jimenez should be up at some point in 2018, but it is unlikely to happen as soon as expected.

Kopech allowed two runs on one hit and four walks while striking out three for Triple-A Charlotte on Sunday.

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Chicago White Sox top starting pitching prospect Michael Kopech said in an interview Friday that he felt very comfortable throwing his changeup in his last outing against Triple-A Gwinnett. Thus far in his career, Kopech has relied on a double-plus fastball that touches 100 mph, combined with a slider which flashes plus at times. That combination has been more than enough to baffle minor league hitters. An effective changeup will take Kopech to the next level. White Sox general manager Rick Hahn said earlier this week that Kopech is not ready for a call-up yet. However, White Sox fans can only stomach a few more looks at James Shields and Miguel Gonzalez. Dynasty owners should look for Kopech to make his MLB debut this summer.

White Sox general manager Rick Hahn said Kopech is not yet ready for a promotion to the majors, Paul Sullivan of the Chicago Tribune reports.

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Chicago White Sox pitching prospect Michael Kopech put up another strong performance for Triple-A Charlotte on Wednesday. Kopech went six innings ahd allowed one hit, one run, two walks and struck out eight batters. Kopech now has a 2.14 ERA and 29 strikeouts with just six walks over 21 innings. Kopech certainly looks ready to help the White Sox, but even with Miguel Gonzalez (shoulder) out and Carson Fulmer sporting a 6.00 ERA, the White Sox seem in no rush to start the clock on Kopech. Kopech will be up at some point this year, it's just a matter of when. He should be stashed in all formats.

Kopech allowed allowed one run on one hit and two walks Wednesday for Triple-A Charlotte, striking out eight batters in six innings.

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Chicago White Sox top pitching prospect Michael Kopech struck out ten hitters on Friday for Triple-A Charlotte. Kopech suffered the loss as he allowed three runs and six hits. Kopech has been pitching very well this year and is making a case to be promoted to the big league club. Kopech will be worth owning once he does get the call, which is likely to happen in 2018.

Kopech (0-1) allowed three runs on six hits and one walk while striking out a season-high 10 for Triple-A Charlotte on Friday.

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Phil Rogers of MLB.com reports that White Sox top pitching prospect Michael Kopech could be called up for a spot start. The White Sox have Thursday off and Friday's scheduled starter James Shields has appeared in relief Wednesday for the White Sox. It would be a bit of a surprise to see Kopech promoted at this point, but if he does get the call, he is worth adding in all formats.

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Chicago White Sox top pitching prospect Michael Kopech continues to pitch well for Triple-A Charlotte. The right-hander went six innings on Saturday and allowed five hits, one run, two walks and struck out three batters. Kopech now has a 0.90 ERA in two games. Kopech has been looking to master his third pitch, the changeup and once he does, he is likely to find his way to Chicago. Kopech touches triple digits on the radar gun and is worthy of being owned in all leagues as he is expected to be up with the Sox as early as July.

Kopech allowed one run on five hits and two walks while striking out three over six innings for Triple-A Charlotte on Saturday.

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Chicago White Sox top pitching prospect Michael Kopech struck out eight hitters Monday in a Triple-A start. Kopech was on Monday in addition to the strikeouts, as he only allowed two hits over four innings. He did walk two batters, but overall he had a very fine performance. Kopech was working on his third pitch -- a changeup -- in spring training. He should reach the big leagues at some point in 2018.

Kopech allowed two hits and two walks while striking out eight over four scoreless innings for Triple-A Charlotte on Monday.

Kopech, who was reassigned to minor-league camp Tuesday, needs to continue to develop his changeup, Paul Sullivan of the Chicago Tribune reports.

Kopech was reassigned to minor-league camp Tuesday.

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The Chicago White Sox announced on Tuesday they have reassigned starting pitcher Michael Kopech to minor league camp. Kopech has had mixed results this spring but has struggled over his previous two outings. Kopech remains one of the top pitching prospects in all of baseball but still needs to develop his changeup. Kopech should ready to be called upon at some point in 2018 and makes for a good stash in deep mixed leagues. He should already be owned in dynasty leagues.

Kopech will not be opening the season on the major-league roster, Daryl Van Schouwen of the Chicago Sun-Times reports.

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Chicago White Sox top pitching prospect Michael Kopech will begin the year in minors. Kopech is still working on his third pitch, the changeup and with the White Sox in rebuild mode, there is no incentive to start his big league clock. Kopech is one of the best young arms in the game and is almost certain to pitch in the big leagues at some point in 2018. He should already be owned in dynasty leagues and is a strong stash in mixed leagues.

Kopech allowed one unearned run on two hits and a walk while striking out three over 2.1 innings in Saturday's game against the Royals.

Kopech allowed two hits and struck out three batters over two scoreless innings in Monday's game against the Athletics.