Peter Dizikes of the MIT News Office highlights one of the finalists in the MIT Sloan Sports Analytics Conference, currently being held in Boston. The paper, “A Data-driven Method for In-game Decision Making in MLB”, was developed by John Guttag and Ganeshapillai Gartheeban.
Guttag and Gartheeban’s developed a model that suggested when managers should take their starting pitchers out of the game by using data from the first 80 percent of the 2006-10 seasons to develop a model. Then they tested their model against the results in the final 20 percent of the season.
Dizikes summarizes some of the important findings:
The study finds that from the fifth inning on, in close games, pitchers who were left in games when the model recommended replacing them allowed runs 60 percent of the time, compared to 43 percent of the time overall.
Over 21,538 innings, the Guttag-Gartheeban model disagreed with the manager’s decision regarding his starting pitcher 48 percent of the time. About 43 percent of the time, the manager left the starting pitcher in when the model indicated he should be replaced. In just 5 percent of the cases did managers pull starting pitchers when the model suggested they should stay in the game
Guttag and Gartheeban do note that their methodology doesn’t consider every factor and recognize that the manager is considering a lot more than just the current game situation. Hypothetically, leaving Justin Verlander in with a 110 pitch count in a 2-1 game in the bottom of the eighth in late September when the Tigers are only in the lead by a game could be justifiable when most objective models would suggest taking him out.
That being said, many managers can improve simply by not having their pitchers throw unnecessary innings, like the seventh inning after their team has taken a 10-1 lead.
Former Tigers infielder Casey McGehee has reportedly signed a one-year deal with the Yomiuri Giants of Nippon Professional Baseball, according to FOX Sports’ Ken Rosenthal.
It’s the fourth move the corner infielder has made in the last two seasons after seeing short-term stints with the Marlins, Giants and Tigers. He signed a minor league deal with the Tigers prior to the 2016 season, providing the club with some infield depth behind 24-year-old Nick Castellanos. When Castellanos hit the disabled list in August with a broken hand, McGehee was recalled from Triple-A Toledo for a 30-game stint and slashed .228/.260/.239 with one extra-base hit in 96 PA. His career batting line (.258/.317/.384 over eight seasons) isn’t too shabby, but his age and a long history of knee injuries puts a damper on his potential.
McGehee last appeared in the NPB circuit in 2013, when he signed a one-year, $1.5 million deal with the Tohoku Rakuten Golden Eagles. He spent the bulk of his season at the hot corner, batting an impressive .292/.396/.515 with 28 homers in 590 PA and appearing in the Eagles’ first and only championship run to date.
The deal comes with a club option for 2018, Rosenthal reports, though no figure has been specified.
Free agent left-hander Rich Hill is rumored to be entertaining a three-year, $40+ million offer from the Dodgers, reports Peter Gammons. The Boston Globe’s Nick Cafardo corroborated the report, adding that Hill could receive somewhere between $46 and $48 million from his former team.
Hill, 36, pitched to a 2.12 ERA and 3.91 FIP in back-to-back stints with the Athletics and Dodgers in 2016. While a chronic case of blisters on his pitching hand limited the frequency of his starts, he still figures to be one of the most productive and noteworthy starting pitchers on the market this winter.
The Orioles, Yankees, Red Sox, Rangers and Astros have all been mentioned as potential suitors for the left-hander’s services, though Orioles’ GM Dan Duquette said the club has yet to make a play for Hill and ESPN’s Jim Bowden pointed out that the Red Sox are less involved in trade talks than other interested parties.