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 13th edition of the Young Twins Tracker.
Notable: Rosario has raised his batting average 42 points since the Twins recalled him from Rochester on July 3, a seven-game stretch in which he’s 12-for 31 (.387) with six runs and four RBI. He posted a four-hit game July 9 against Texas, coming a Kennys Vargas base-running error away from the cycle, and a three-hit game the following night. The lack of walks remain an issue (none in the seven-game stretch), but it certainly is less glaring given his production.
Notable: Our pick as the best Twins prospect of the first half, Gonzalves turned in another quality start last week, racking up 11 strikeouts through six innings to lead the Lookouts to a win over Tennessee.
Notable: Stewart had arguably his worst start of the season last Friday, going just 3/2 innings and allowing 11 hits and seven runs (four earned) in a loss. He rebounded with a one-run, seven-hit performance over seven innings on Wednesday.
Notable: Walker had three singles and a walk in five plate appearances last Friday. He had five strikeouts in eight plate appearances in two other games this past week.
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
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