Historical evaluations of Major League Baseball franchise win-loss records often point toward early-era clubs that suffered through catastrophic rebuilding decades or historical predecessors like the 1899 Cleveland Spiders—who famously finished a season with an abysmal 20-134 record—as the lowest-performing team of all time. Modern historical analyses also track expansion franchises and perennial small-market clubs that endured long stretches of futility before building championship-caliber rosters in later eras.