Reds' manager Dusty Baker watches from the dugout as his team plays the Giants in Game 5 of their MLB NLDS playoff baseball series in Cincinnati

Latest research shows managers inefficient when taking pitchers out of the game


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.

Mariners interested in free agent outfielder Nori Aoki

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New Mariners general manager Jerry Dipoto has kept pretty busy in his short time on the job and Bob Dutton of the Tacoma News Tribune reports that free agent outfielder Nori Aoki could be his next target. The club recently pursued a trade for Marlins outfielder Marcell Ozuna, but the asking price has them looking at alternatives.

Aoki, who turns 34 in January, has hit .287 with a .353 on-base percentage over four seasons since coming over from Japan. He was having a fine season with the Giants this year prior to being shut down in September with lingering concussion symptoms.

The Giants decided against picking up Aoki’s $5.5 million club option for 2016 earlier this month, but he should still do pretty well for himself this winter assuming he’s feeling good.

Report: Johnny Cueto is believed to be looking for a $140-160 million deal

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It was reported Sunday that free agent right-hander Johnny Cueto had turned down a six-year, $120 million contract from the Diamondbacks. He’s hoping to land a bigger deal this winter and ESPN’s Jerry Crasnick has heard some chatter about what he’s looking for.

Jordan Zimmermann finalized a five-year, $110 million contract with the Tigers today, which works out to $22 million per season. Arizona’s offer to Cueto checked in at $20 million per season. A six-year offer to Cueto at the same AAV (average annual value) as Zimmermann would put him at $132 million, which is still a little shy of the figure stated by Crasnick. Of course, Cueto owns a 2.71 ERA (145 ERA+) over the last five seasons compared to a 3.14 ERA (123 ERA+) by Zimmermann during that same timespan, so there’s a case to be made that he should get more. Still, he’s the clear No. 3 starter on the market behind David Price and Zack Greinke.

CBS Sports’ Jon Heyman reports that the Dodgers, Giants, Red Sox, and Cubs are among the other teams who have interest in Cueto. One variable in his favor is that he is not attached to draft pick compensation, as he was traded from the Reds to the Royals during the 2015 season.

Report: Around 20 teams have contacted the Braves about Shelby Miller

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The rebuilding Braves have already been active on the trade market and they might not be done, as CBS Sports’ Jon Heyman reports that right-hander Shelby Miller has been a very popular name. In fact, around 20 teams have checked in.

Nothing is considered close and the Braves have set a very high asking price, mostly centered around offense. They asked for right-hander Luis Severino in talks with the Yankees and would expect outfielder Marcell Ozuna among other pieces from the Marlins. The Diamondbacks and Giants are among the other interested clubs.

Miller is under team control through 2018, so there’s not necessarily a sense of urgency to move him, but anything is possible with the way the Braves are doing things right now. The 25-year-old is coming off a year where he went 6-17, but that was about really rotten luck more than anything else, as he had a fine 3.02 ERA and 171/73 K/BB ratio over 205 1/3 innings. The Braves gave him the worst run support of any starter in the majors.

Mets expected to tender a contract to Jenrry Mejia

NEW YORK, NY - JULY 12:  Jenrry Mejia #58 of the New York Mets reacts as he walks off the field after getting the final out of the seventh inning against the Arizona Diamondbacks at Citi Field on July 12, 2015 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Jim McIsaac/Getty Images)
Photo by Jim McIsaac/Getty Images

Jenrry Mejia appeared in just seven games this past season due to a pair of suspensions for performance-enhancing drugs, but Adam Rubin of ESPN New York reports that the Mets are expected to tender him a contract for 2016.

While the Mets were vocal about their disappointment in Mejia’s actions, it makes sense to keep him around as an option. Had he played a full season in 2015, he would have earned $2.595 million. He’s arbitration-eligible for the second time this winter and figures to receive a contract similar to his 2015 figure, but he’ll only be paid for the games he plays. He still has 100 games to serve on his second PED suspension, which means that he’ll only be paid for 62 games in 2016. This likely puts his salary closer to $1 million, which is a small price to pay for someone who could prove useful during the second half and beyond. He also won’t count toward the team’s 40-man roster until he’s active.

Mejia, who turned 26 in October, owns a 3.68 ERA in the majors and saved 28 games for the Mets in 2014. He’s currently pitching as a starter in the Dominican Winter League.