Young Twins Tracker: Gonsalves promoted to Double-A
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The Minnesota Twins are reshaping their franchise with an injection of youth and prospects.
Every Thursday for the rest of the season, FOX Sports North will take a closer look at some specific young players -- as well as noting others who might be stepping up -- measuring, highlighting and evaluating their progress. Please note the glossary of advanced stats at the bottom of the story.
This is the 10th edition of the Young Twins Tracker.
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IN THE MAJORS
Byron Buxton (age 22)
Last week: 5 games, 18 PA, 15 AB, .067 BA, .167 OBP, .067 SLG, .233 OPS
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Season (Triple-A): 29 games, 129 PA, .336 BA, .403 OBP, .603 SLG, 1.007 OPS, 9 2B, 2 3B, 6 HR, 14 RBI, 4 SB, 11 BB, 26 SO
Season (MLB): 37 G, 125 PA, 114 AB, .193 BA, .236 OBP, .333 SLG, .569 OPS, 12 R, 22 H, 7 2B, 3 3B, 1 HR, 8 RBI, 5 SB, 6 BB, 52 SO, 52 OPS+, 0.3 WAR, .167 BAbip
Notable: Buxton managed just one hit in 15 at-bats last week, while racking up 10 strikeouts.
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Max Kepler (age 22)
Last week: 6 games, 24 PA, 21 AB, .381 BA, .417 OBP, .667 SLG, 1.083 OPS
Season (Triple-A): 30 G, 128 PA, 110 AB, .282 BA, .367 OBP, .455 SLG, .822 OPS, 16 R, 31 H, 4 2B, 6 3B, 1 HR, 19 RBI, 1 SB, 16 BB, 14 SO
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Season (MLB): 29 G, 91 PA, 81 AB, .247 BA, .319 OBP, .420 SLG, .738 OPS, 12 R, 20 H, 8 2B, 0 3B, 2 HR, 12 RBI, 2 SB, 8 BB, 21 SO, 99 OPS+, 0.6 WAR, .305 BAbip
Notable: Kepler's game-tying single in the fifth against the Phillies on Wednesday helped the Twins to their third straight win. The German-born outfielder now has a hit in eight straight games.
Miguel Sano (age 22)
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Last week: N/A
Season: 50 G, 211 PA, 179 AB, .235 BA, .341 OBP, .458 SLG, .799 OPS, 25 R, 42 H, 7 2B, 0 3B, 11 HR, 27 RBI, 1 SB, 29 BB, 71 SO, 117 OPS+, 0.9 WAR, .313 BAbip
Notable: Sano is making progress, and will begin a rehab assignment with Triple-A Rochester on Thursday.
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DOWN ON THE FARM
Jose Berrios (age 22/Triple-A)
Last week: 1 game (1 start), 0-1, 1 ER, 6 IP, 2 H, 1 HR, 2 R, 3 BB, 7 K
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Season (Triple-A): 9 games (9 starts), 43 2/3 IP 5-3, 3.35 ERA, 1.174 WHIP, 9.7 K/9
Notable: Berrios allowed just two hits for the first time since April, pitching six innings in a loss to the Toledo Mud Hens.
Nick Burdi (age 23/Double-A)
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Last week: N/A
Season: 3 games (no starts), 1-0, 9.00 ERA, 3 IP, 4 H, 3 R, 0 HR, 1 BB, 1 SO, 1.32 WHIP
Notable: The Chattanooga Lookouts placed Burdi on the seven-day disabled list May 5 for a bone bruise on his right arm. He hasn't pitched since April 28.
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Stephen Gonsalves (age 21/High Single-A)
Last week: 1 game (1 start), 5 IP, 4 ER, 5 H, 4 R, 2 BB, 8 K
Season: 11 games (11 starts), 65 2/3 IP 5-4, 2.33 ERA, 43 H, 19 R, 2 HR, 20 BB, 66 K, 0.959 WHIP
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Notable: Gonsalves was promoted to Double-A on Wednesday after 11 starts for the Fort Myers Miracle. His 2.33 ERA ranked seventh in the Florida State League.
Nick Gordon (age 20/High Single-A)
Last week: 6 games, 24 AB, 7 H, 2 R, 1 2B, 1 3B, 0 HR, 1 RBI, 0 BB, 6 SO, 1 SB, .292 BA
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Season: 54 games, 212 AB, .288 BA, .341 OBP, .410 SLG, .751 OPS, 24 R, 61 H, 12 2B, 4 3B, 2 HR, 19 RBI, 9 SB, 12 BB, 44 SO
Notable: Gordon registered one of the South Division's four hits in the FSL All-Star Game on Saturday.
Tyler Jay (age 22/High Single-A)
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Last week: N/A
Season: 11 games (11 starts), 60 2/3 IP, 56 H, 21 R, 5 HR, 18 BB, 61 K, 2.97 ERA
Notable: Jay made his last appearance for the Miracle on June 14, but pitched one inning in the FSL All-Star Game, allowing one hit.
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Alex Meyer (age 26/Triple-A)
Last week: N/A
Season (Triple-A): 3 games (2 starts), 1-1, 1.04 ERA, 17 1/3 IP, 0.865 WHIP, 11 H, 0 HR, 4 BB, 19 K
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Season (MLB): 2 games (1 starts), 1-1, 12.27 ERA, 3 2/3 IP, 3.273 WHIP, 8 H, 1 HR, 4 BB, 15 K
Notable: Meyer remains shelved with right shoulder inflammation. He hasn't pitched in a game since his May 3 start for the Twins.
Jorge Polanco (age 22)
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Last week: 7 games, 28 AB, 5 R, 9 H, 4 2B, 0 3B, 2 HR, 10 RBI, 2 BB, 3 SO, .321 BA
Season (Triple-A): 42 G, 159 AB, .302 BA, .365 OBP, .509 SLG, .874 OPS, 20 R, 48 H, 11 2B, 5 3B, 4 HR, 19 RBI, 18 BB, 29 SO
Season (MLB): 13 games, 32 PA, .231 BA, .344 OBP, .462 SLG, .805 OPS, 3 2B, 0 3B, 1 HR, 4 R, 4 RBI, 1 SB, 4 BB, 3 K, 120 OPS+, .217 BAbip, 0.3 WAR.
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Notable: Polanco racked up nine hits and 10 RBI last week, and now has a hit in seven straight games.
Eddie Rosario (age 24/Triple-A)
Last week: 7 games, 26 AB, 6 R, 12 H, 3 2B, 0 3B, 1 HR, 6 RBI, 1 BB, 2 SO, 3 SB, .462 BA
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Season (Triple-A): 31 games, 123 AB, .358 BA, .377 OBP, .585 SLG, .962 OPS, 44 H, 13 2B, 0 3B, 5 HR, 22 R, 22 RBI, 5 SB, 5 BB, 17 SO
Season (MLB): 32 games, 121 PA, .200 BA, .218 OBP, .313 SLG, .532 OPS, 4 2B, 0 3B, 3 HR, 15 R, 9 RBI, 3 SB, 3 BB, 31 K, .244 BAbip, 45 OPS+, -0.7 WAR
Notable: Rosario has now reached base in 18 consecutive games, a stretch in which he has 27 hits and 14 RBI.
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Kohl Stewart (age 21/Double-A)
Last week: 1 game (1 start), 1-1, 5 ER, 4 1/3 IP, 8 H, 1 HR, 3 BB, 3 K
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Season (Single-A): 9 games (9 starts), 3-2, 2.61 ERA, 51 2/3 IP, 39 H, 19 R, 2 HR, 19 BB, 44 K, 1.12 WHIP
Season (Double-A): 4 games (4 starts), 1-2, 4.82 ERA, 18 2/3 IP, 22 H, 13 R, 1 HR, 7 BB, 12 K, 1.554 WHIP
Notable: Stewart allowed five runs on eight hits in his lone start last week.
Adam Walker (age 24/Triple-A)
Last week: 7 games, 25 AB, 3 H, 0 2B, 0 3B, 1 HR, 1 RBI, 3 BB, 9 SO, 0 SB, .120 BA
Season (Triple-A): 62 games, 218 AB, 45 H, 7 2B, 1 3B, 14 HR, 31 R, 32 RBI, 24 BB, 105 SO, 3 SB, .206 BA
Notable: Walker now leads the International League with 14 home runs.
A glossary of some of the advanced statistics used:
OPS: On base percentage + slugging percentage
OPS+: OPS compared to league average of 100, adjusted to the player's ballpark
sOPS+: OPS for the split (in our case the last 7 days) compared to the league's split OPS (100 being average).
BAbip: Batting average on balls in play.
WHIP: Walks plus hits divided by innings pitched.
ERA+: ERA compared to league average of 100, adjusted to the player's ballpark
FIP: Fielding Independent Pitching. Measures a pitcher's effectiveness at presenting home runs, walks and hit by pitches while causing strikeouts. The MLB average FIP is the same as the MLB average ERA.
WAR: Wins Above Replacement value. Represents the number of wins the player added to the team above what a replacement player would add (we are using WAR from baseball-reference.com).
Statistics courtesy baseball-reference.com and milb.com