Danny Jansen, recently traded to the Boston Red Sox from the Toronto Blue Jays, is set to make Major League Baseball history by becoming the first player to appear in the same game for both teams. This unique situation arises from a suspended game on June 26, where Jansen was at bat for the Blue Jays before the game was called due to rain. When the game resumes on Monday, Jansen will catch for the Red Sox, marking a rare occurrence in baseball's long history. Jansen expressed surprise at being the first to achieve this feat, calling it a 'cool' oddity of the sport. An authenticator is expected to capture memorabilia for the Hall of Fame from this historic game. Despite the personal milestone, Jansen emphasized his focus on contributing to the team's success as they strive for a playoff spot.