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.
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This is the 19th edition of the Young Twins Tracker.
Note: Statistics/information through Wednesday’s games
IN THE MAJORS
Jose Berrios (age 22)
Last week: 1 game (1 start), 0-0, 4 IP, 5 H, 4 R, 0 HR, 4 BB, 2 K
Season (Triple-A): 16 games (16 starts), 103 1/3 IP, 10-5, 2.44 ERA, 1.006 WHIP, 9.7 K/9
Season (MLB): 8 games (8 starts), 2-3, 32 IP, 9.28 ERA, 1.938 WHIP, 9 K/9
Notable: Berrios looked shaky once again in his eighth start, allowing four runs while facing just 21 batters in a 5-4 loss to the Kansas City Royals. The Twins’ top pitching prospect has logged more than five innings of work just once so far in the majors.
Notable: Kepler’s coronation may have been slightly premature. The German-born rookie hasn’t homered since Aug. 2, but his numbers remain near the top amongst American League rookies, particularly his .817 OPS.
Pat Light (age 25)
Last week: 2 games (0 starts), 0-0, 0 SV, 2 IP, 1 H, 0 R, 0 BB, 2 K
Notable: After moving around the infield earlier in the season and starting a few games and third in early August, Polanco has settled in as the Twins’ starting shortstop over the last week and has started 10 of his last 12 games at the position.
Notable: Gonsalves’ hot streak continued with another win last week. His ERA dropped again on Monday, as Gonsalves racked up his third straight win, and fourth such decision in his last five appearances. He hasn’t lost since July 1.
Nick Gordon (age 20/High Single-A)
Last week: 6 games, 23 AB, 4 H, 0 R, 0 RBI, 0 SB, 1 BB, 8 K, .174 BA
Notable: Jay was placed on the DL with a neck strain on Aug. 1. There was some concern injury could extend to his shoulder, but tests showed it was a nerve irritation in his neck. The Twins are hopeful he’ll return to the mound this season.
Notable: Mejia, obtained from the Giants for Eduardo Nunez, made his Twins debut on Saturday, and it didn’t go particularly well. Mejia entered the game with Minnesota training 8-0, allowing two runs on eight hits through just 2 1/3 innings.
Kohl Stewart (age 21/Double-A)
Last week: 2 game (2 starts), 2-0, 14 IP, 12 H, 4 R, 7 BB, 7 K
Notable: Walker hit his fourth triple of the season last week, driving in two runs on the play, and stole just his sixth base of the season.
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 of baseball-reference.com and milb.com