Even for a game that’s been around since the 1800s, baseball has an incredible volume of records. There’s a record for most hits in a month (Ty Cobb with 68), most RBI in a single inning (Fernando Tatis with eight) and most no-hitters broken up in the ninth inning (Nolan Ryan with five).
But while the above records—as well as many others—seem unlikely to break, some might actually be impossible. Due to how the game has evolved, especially in regards to health, players simply are not allowed to accumulate the necessary playing time needed to shatter feats held by the likes of Charles “Old Hoss” Radbourn, Cy Young and even Cal Ripken Jr.
Below are baseball’s five most unbreakable records.