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

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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.

With Adam Jones ailing, Orioles add Borbon to outfield

SAN FRANCISCO, CA - AUGUST 13: Adam Jones #10 of the Baltimore Orioles reacts after being hit in the hand by a pitch in the sixth against the San Francisco Giants inning during an interleague game at AT&T Park on August 13, 2016 in San Francisco, California. (Photo by Lachlan Cunningham/Getty Images)
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NEW YORK — With star outfielder Adam Jones nursing a tender hamstring, the Baltimore Orioles selected the contract of Julio Borbon from Double-A Bowie and optioned pitcher Mike Wright to Triple-A Norfolk.

Borbon was inserted in the starting lineup for Baltimore, batting ninth against hard-throwing New York Yankees rookie Chad Green.

“We had some other center field options,” manager Buck Showalter said. “Borbon is our best option at this point.”

Jones left Friday’s game in the second inning with a left hamstring strain. He departed the previous night’s game at Washington in the ninth inning with hamstring cramps and aggravated the injury hustling down the first base line on a soft grounder to third.

“I got a feeling that if he hadn’t had that first swinging bunt, it might not have been a problem,” Showalter indicated. “He’s not going to trot to first base as much as I talked to him about it before the game.”

Although Jones was unable to talk his way into Saturday’s lineup, Showalter speculated that he might be available to pinch-hit.

The 30-year old Borbon was 2 for 9 in five games with the Orioles earlier this season, but was designated for assignment on July 26. To create room for Borbon on the 40-man roster, pitcher Logan Ondrusek was designated for assignment on Friday.

No structural damage found in Andrew Benintendi’s knee

ST. PETERSBURG, FL - AUGUST 24:  Shortstop Matt Duffy #5 of the Tampa Bay Rays tags out Andrew Benintendi #40 of the Boston Red Sox after Dustin Pedroia grounded into the double play  during the seventh inning of a game on August 24, 2016 at Tropicana Field in St. Petersburg, Florida. (Photo by Brian Blanco/Getty Images)
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Good news in Boston: An MRI on Red Sox outfielder Andrew Benintendi‘s left knee revealed no structural damage.

Benintendi slipped while trying to avoid a tag at second base, injuring his leg, but it appears he’s avoided a serious injury. A timetable for his return isn’t known at this point, but the Red Sox expect to get him back before the end of the season.

Benintendi is hitting .324/.365/.485 with a homer and ten RBI in 21 games.