[3] The inaugural series was played between the Red Sox and Yankees, longtime divisional rivals,[3] who had expressed specific interest in participating in the London games.

[4] The facility was originally constructed for the 2012 Summer Olympics; in late-2015, it was reported that MLB officials had measured the stadium's dimensions and considered it potentially suitable for baseball, and had negotiated the possibility of holding games there.

Materials to construct the playing surface include approximately 142,000 square feet (13,200 m2) of FieldTurf, and clay for the pitcher's mound and home plate area sourced from Pennsylvania.

[11] In the United States, television rights for the series were split between Fox and ESPN respectively, with both games called by their lead commentary teams (led by Joe Buck and Matt Vasgersian, respectively).

[16] The Boston Red Sox Radio Network also carried the games, with announcers Joe Castiglione, Dave O’Brien, and Sean McDonough.

[20] Fans voted for Winston Churchill, Freddie Mercury, King Henry VIII, and the Loch Ness Monster to be the entrants in the mascot races.

[19] At the June 29 game, the national anthems of both the United States and the United Kingdom were performed by The Kingdom Choir;[23] the ceremonial first pitches were thrown by participants of the Invictus Games with Prince Harry, Duke of Sussex, and his wife, Meghan, Duchess of Sussex, in attendance;[24] the mascot race was won by Freddie Mercury;[25] and The Freeze lost to a fan in their footrace.

[26] At the June 30 game, the national anthems were performed by the Capital Children's Choir;[27] The Freeze defeated a fan in their footrace;[28] and the mascot race was won by King Henry VIII.

[34][35] The attendance of 59,659 was the most at an MLB game since September 28, 2003, when a crowd of 60,988 at Qualcomm Stadium saw the San Diego Padres lose to the visiting Colorado Rockies.