Chief among them is the "Going to See Coldplay List", which allows players to leave their team for one day to see Coldplay. The team may then recall a minor league player without making a disabled list move, providing the recalled player is not also on the Coldplay trip.
Several hours after the announcement, baseball statistics website GranPhaphs posted an article analyzing players' walk-up music, and found that, not coincidentally, the Coldplay song "Viva La Vida" accounts for nearly 65% of the walk-up songs of white MLB players.
MLB spokesperson Erika Hagen said that the "Coldplay problem" has gotten out of hand in recent years, and this measure is an attempt to provide teams with a backup plan whenever Coldplay is in the area. Last year the problem reached epidemic levels when teams would regularly lose up to 40% of their active roster on nights when Coldplay was playing a concert.
Pittsburgh Pirates closer Joel Hanrahan remembers one such game with not-so-fond memories. "We lost our entire infield," Hanrahan told Bottom of the Fourth. "The whole bullpen had to play the field. When we got to the later innings, we would just bring in a reliever from somewhere on the diamond, and then when they were done pitching they'd go back into the field."
Other lists introduced along with paternity, concussion and Coldplay (along with their respective lengths) include the "Just Needs Some Time to Think List" (4 days), the "Caught in a Wikipedia Link Maze List" (3 hours) and "Really Needs To Go To The Bathroom List" (5 minutes).