Boston Red Sox, Beacon, and Buy-In

The Boston Red Sox upgraded their machine learning capabilities to provide user-friendly data to management and players. Management and players bought-in to the system, and many wins ensued.

Baseball is the oldest of the United States’ four largest professional sports, but arguably the one most impacted by the cutting-edge technology of machine learning. Fifteen years have passed since Michael Lewis released his book Moneyball which chronicled how the Oakland Athletics, a team with significantly fewer financial resources than most of its competitors, had used advanced analytics in the preceding years to become one of the best teams in Major League Baseball.[1] In the years since, numerous other baseball teams have bought into analytics, using machine learning to maximize performance of players to win more baseball games and attract more fans to games. In the past few seasons, perhaps no team has done more in this area than the Boston Red Sox.


In 2018, the Boston Red Sox won 108 games, the most in the league, and more importantly, the World Series Championship. According to Tim Britton of The Athletic, the team attributes a lot of its success to its analytics department. In fact, Britton points out that a team official pointed straight to that group when discussing the team’s success.[2] Recently, the Red Sox approach to machine learning has undergone a major overhaul. As Dave Sheinin of The Washington Post points out, at the end of a disappointing 2015 season Red Sox ownership believed that the team relied too much on analytics and sought a “more holistic” approach to optimizing team performance.[3] A holistic approach, however, did not mean an abandonment of analytics: As Alex Speier of The Boston Globe mentions, the team saw an improvement of its information technology as a key cog in the holistic approach.[4]


The Red Sox new strategy towards machine learning has a two-pronged approach: The improvement of information technology and better use of data from that technology by the team itself. Previously, the Red Sox employed “Carmine,” an IT database which provided information to improve organizational decision making. Now the franchise has worked on an improved database they’ve dubbed “Beacon” which offers App-based, more user-friendly data derived from asking deeper questions to help management make better personnel decisions.[5] A better machine with a new name wouldn’t mean much without the human buy-in, however. As Britton notes, the team has increased the number of personnel within the analytics department. Additionally, new team manager Alex Cora, the person with final authority on how to use players during a game, earned his position largely due to his belief in and ability to utilize data provided by the analytics department. In one game, for instance, Cora placed one of his players, Mookie Betts, in a perfect defensive position to prevent an opposing player from getting a  hit. After the play, Betts took out an index card provided by the analytics department which gave him and Cora an easy-to-read description on where he should position himself against each hitter.[6]


Overall, I commend how the Red Sox have improved their machine learning capabilities and the way humans interact with it. Going forward, I anticipate that the organization continuously will seek ways to improve along this front, and I would recommend so doing since sports analytics now is such a competitive field. I also have some other pointed recommendations. For one, as Sheinin points out, the Red Sox DO currently have the highest player payroll.[7] While the Red Sox have more financial resources than most teams, I recommend that management use Beacon to determine how to use personnel costs more efficiently, especially because several important inexpensive players, such as Betts, will seek new contracts soon. Also, Boston should look into whether Beacon can analyze some human factors. For instance, David Price, a top pitcher, played exceptionally well this past October when he usually plays horribly during that crucial month. Could Beacon possibly detect a pattern and predict such breakthroughs?


While completing this essay, several questions came to my mind which made me somewhat skeptical of exactly how important the Red Sox improvements have been. First, would the improvements have mattered THAT much if the Red Sox did not have the financial resources they enjoy relative to other teams? And, secondly, when so many teams employ machine learning in the sport, how can we be sure that innovations that lead to improvement come from shrewd decisions and not just luck?


(797 WORDS)

[1] Lewis, Michael. Moneyball: The Art of Winning An Unfair Game. New York: W.W. Norton, 2003.

[2] Britton, Tim. “How Alex Cora’s Red Sox Reclaimed Their Perch Atop the Data and Analytics Game.” The Athletic. October 26, 2018.

[3] Sheinin, Dave. “Analytics, Scouting, and Alex Cora: How 2018 Red Sox Became One of History’s Greatest Teams.” The Washington Post. October 29, 2018.

[4] Speier, Alex. “Red Sox Are Retiring Carmine For A New Analytics System.” The Boston Globe. February 22, 2017.

[5] Speier

[6] Britton (includes the proceeding photo/featured image)

[7] Sheinin


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Student comments on Boston Red Sox, Beacon, and Buy-In

  1. Awesome article! Baseball is one of the richest data sources available and can leverage machine learning to its fullest potential. One of the key concerns you mentioned is spot on: manager buy-in. It is one thing for a manger to believe in and attempt to implement analytics, but a manger that understands and interprets analytics is immensely powerful and unique in baseball. In response to your second question, I believe accountability from an organizational perspective is critical to evaluate the effectiveness of analytics vs. luck as a manager. Once the analytics department relays the “playbook”, if they see the manager implement or make decisions based on this they can evaluate the usefulness of the data analysis.

  2. As a huge Red Sox fan, it was great to get a behind-the-scenes look at how we pulled off such a remarkable season! To address your first question: it’s important to recognize two pieces of information. First, there tend to be two segments of teams – small market and big market teams. The Red Sox, to your point, certainly fit in the latter camp… but they’re not alone. In their road to the World Series, the Red Sox beat two of the biggest names in baseball in the Yankees (7th in payroll) and Dodgers (3rd in payroll). So the Red Sox approach appears to work against teams that have the same financial resources that they do. Second, the Red Sox also had a remarkable season by any standard, finishing the regular season with 8 more wins than the next-best team. As a result, it appears that its new approach to data is working.

  3. Great article! Moneyball started this all, but improvements in data collection, analytics, and machine learning have taken that concept to incredible levels. With the tremendous amount of data available, a decision maker can become easily overloaded and lost in the noise. Therefore, the competitive edge does not lie with data or analytics, but with the human component that decides what data is relevant and what is not. It is here where a Baseball team can gain an edge over opponents with same analytic capabilities. It is not about selecting a player with good stats, but a player with the right stats. Though these analytical capabilities are important; as we saw with Oakland during the Moneyball era or Boston in 2015, analytics can’t solve everything. Money matters and the best players go for a premium. Analytics allow you to help find undiscovered players to fill holes in the salary puzzle.

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