Morning Mound Visit: sabermetrics news - 9/19/19

FanGraphs | Jay Jaffe: Luis Severino made his Yankees debut with just ten games remaining in the season, so while it had no effect on the standings, his dazzling debut actually changes the playoff picture quite a bit, as the Yankees (before this) probably had one of the weaker staffs in the American League postseason picture. Now, with both him and James Paxton and Masahiro Tanaka, they could be even more formidable.

Baseball Prospectus | Matthew Trueblood ($): It’s going to be a wild finish for the Cubs and Cardinals who, in unprecedented manner, are facing each other seven out of ten games down the stretch. The other wild card are the Brewers, who face none of them and could slide right in if the two happen to split their set.

The Ringer | Michael Baumann: It’s been a wild year, and with wild stats to boot, including Aristides Aquino’s home runs, Justin Verlander’s ERA compared to home runs, or Gerrit Cole’s strikeout rate, to name a few.