The Red Sox responded in kind on Tuesday, filing a complaint against the Yankees, claiming that the team uses a camera from its television network, YES, exclusively to steal signs during games.
It is unclear what penalties, if any, Commissioner Rob Manfred will issue against the Red Sox and whether he will order a more expansive investigation to determine the extent of the Red Sox’ sign-stealing system. It is also unclear how he will proceed with the countercomplaint.
Pat Courtney, a spokesman for Major League Baseball, declined to comment on the case. Attempts to reach the Red Sox were not successful. A Yankees official declined to comment on the Red Sox’ claim regarding the YES camera.
Stealing signs is believed to be most effective when there is a runner on second base who can watch what hand signals the catcher is using to communicate with the pitcher and then relay to the batter any clues about what type of pitch may be coming. Such tactics are allowed as long as long as teams do not use any methods beyond their eyes. Binoculars and electronic devices are prohibited to communicate about signs.
In recent years, as cameras have proliferated in major-league ballparks, teams have begun using the abundance of video to help them discern opponents’ signs. Some clubs have had clubhouse attendants quickly relay information to the dugout from personnel monitoring video.
With that approach, the information has to be rushed to the dugout on foot so it can be passed to the runner on second base. The Red Sox seemed to shorten the communication chain — and more quickly get the information to their batters — by sending information electronically to people in the dugout.
The Red Sox told league investigators that team personnel scanning instant-replay video were sending the pitch signs electronically to the trainers, who were then passing the information to the players.
As part of the inquiry, baseball investigators have interviewed the Red Sox team trainers and outfielder Chris Young, a former Yankees player. The Red Sox told league investigators that the team’s manager, John Farrell, general manager, Dave Dombrowski, and other front-office officials were not aware of the sign-stealing operation, the people said.
In the first game of the series in question, the first time the Red Sox got a runner on second was Xander Bogaerts, in the second inning. Rafael Devers promptly hit a home run, giving the Red Sox a 2-0 lead. The Red Sox went 5 for 8 in the first game when they had a man on second.
Their success when they had a runner on second in the other two games was mixed: 1 for 6 in the second game; and 3 for 10 in the third game.
The video provided to the commissioner’s office by the Yankees was captured during the first two games of the series and included at least three clips. In the clips, the team’s assistant athletic trainer, Jon Jochim, is seen looking at his Apple Watch and then passing information to outfielder Brock Holt and second baseman Dustin Pedroia, who was injured at the time but in uniform. In one instance, Pedroia is then seen passing the information to Young.
The Red Sox’ tactics will add to their intense rivalry with the Yankees, who closely trail them in the standings. Outside of New England, the case will be reminiscent of the Spygate controversy that erupted a decade ago when the world-beating Patriots were found to have violated N.F.L. rules by spying on opponents to gain an edge.
Mr. Manfred is in a difficult position as he decides how to discipline the team and whether to continue investigating to try to determine if the Red Sox violated rules in other games this season and whether Farrell and other team personnel knew about the scheme.
A decade ago, the N.F.L. commissioner, Roger Goodell, hastily took away a first-round draft pick and fined the Patriots and their coach, Bill Belichick, before conducting a thorough investigation. When more evidence of cheating later emerged, Goodell was accused of trying to minimize the damage and protect one of the sport’s premiere franchises. Congress eventually got involved.
In baseball, the most infamous incident involving sign stealing played out in 1951, when the New York Giants overcame a 13 and one- half game deficit in the standings over the final two months of the season to catch the Brooklyn Dodgers. The Giants went on to beat the Dodgers in a playoff for the pennant when Bobby Thomson hit a home run remembered as the “ Shot Heard Round the World.” Fifty years later, The Wall Street Journal revealed that the Giants had spies in the center-field clubhouse at the Polo Grounds who used a telescope to steal signs from the opposing catcher, which were then relayed to Giants’ players from a backup player in the bullpen.
In 1997, teams accused the Mets of planting small cameras near home plate in Shea Stadium to spy on catchers. The Mets denied that they had used the cameras to try to steal signs, and the league did not take any action.
More recently, the Philadelphia Phillies faced sign-stealing accusations in 2011, when they were one of the best teams in baseball. Several teams logged complaints with the commissioner’s office that the team used binoculars and other unauthorized methods to steal signs. The Phillies were never sanctioned by Major League Baseball.
Some in baseball would like for Mr. Manfred to take away some of Boston’s victories, a move that would be highly unusual. Others believe that a significant fine and the docking of draft picks would be sufficient.