The Mariners are a team whose foundation was built on roster miscalculations. Born in 1977, it took them 15 agonizing seasons before they had their first winning record (the expansion Arizona Diamondbacks, by contrast, won the World Series in their fourth year). By the time the Mariners squeaked out an 83-79 record in 1991 and celebrated with Champagne (true story), their expansion partner, the Toronto Blue Jays, had experienced nine consecutive winning seasons, three playoff berths and were one year from back-to-back World Series titles. The Mariners have been futilely chasing success ever si…