In an unprecedented feat in Major League Baseball history, catcher Danny Jansen achieved a milestone that had never been seen before. Jansen, who was originally a member of the Toronto Blue Jays but had recently been traded to the Boston Red Sox, became the first player to appear on both sides of a baseball box score within the same inning.

The exceptional turn of events took place on Monday when the rain-delayed game, originally started by Jansen for the Blue Jays in June, was resumed. It was then that Jansen took to the field for the Red Sox, marking a truly unique occurrence in the world of baseball.

With anticipation mounting, Red Sox media relations coordinator Daveson Perez made an announcement in the press box before the game commenced. "Pinch-hitting for Danny Jansen: Dalton Varsho," Perez declared, making it clear that Jansen would now take on a defensive role for the Red Sox.

During his initial appearance for the Blue Jays back in June, Jansen fouled off the only pitch he faced before the game was suspended due to rain. However, soon after, he made a pivotal move to the Red Sox, becoming a key player for his new team.

As fate would have it, with Jansen behind the plate for the Red Sox, pitcher Nick Pivetta completed the at-bat that Jansen had started, striking out Varsho. In an unfortunate turn of events for Jansen, Varsho's strikeout coincided with Davis Schneider stealing second base on him. The inning ended with Jansen's defensive contributions as Will Wagner also struck out.

In a surprising twist, Jansen found himself at bat for the Red Sox in the bottom of the second inning. The sparse but enthusiastic crowd cheered for him as he hit a lazy liner to first base, concluding the inning. Later, in the fifth inning, Jansen singled to center for the Red Sox, continuing his impact on the game.

Acknowledging the historical significance of Jansen's achievement, an authenticator was present to tag all of his equipment, ensuring its place in baseball history. The Baseball Hall of Fame quickly expressed its interest in the official scorecard from the game, noting that it would be a valuable tool for documentation and illustration of this unprecedented event.

Red Sox manager Alex Cora embraced the uniqueness of the situation, deliberately placing Jansen in the lineup for the makeup game. He remarked, "Let's make history." Jansen, while surprised that his accomplishment had never occurred before in the sport's long history, expressed his pride in being part of this iconic moment.

Indeed, Danny Jansen has etched his name in baseball lore by playing for two teams in the same inning, solidifying his place in the annals of Major League Baseball history.

The Associated Press contributed to this story.