bench coach. Krause urged Winter to teach all of the Bulls players, especially Michael Jordan, the Triangle Offense. Winter learned the triangle offense as a college player at USC under then head coach Sam Barry, and later used it to successfully guide the Kansas State University Wildcats to a number one ranking, topping both national college basketball polls during the 1958-59 regular season and also leading the program to two Final Four appearances as their head coach. Krause even had to fire then Bulls head coach Doug Collins and replace him with assistant coach Phil Jackson because Collins would not let Winter do as Krause had instructed. Building the 1991–93 roster At the time Krause took over as general manager, he already had on the team Michael Jordan and John Paxson — two of the five players who would become key parts of the team that would win three consecutive championships from 1991 to 1993. Krause made a number of moves that began building the foundation for future success. He turned over the Bulls roster and built up a collection of draft picks, although the moves in 1985 and 1986 were not particularly noteworthy. Krause selected forward Brad Sellers in the first round of the 1986 NBA draft, but Sellers did not garner significant playing time, and was traded after three seasons. It was in the 1987 NBA draft that Krause drafted power forward Horace Grant and traded draft pick Olden Polynice, a center, for Seattle's 1st Round draft pick — Scottie Pippen, a small forward. The two were, along with Jordan, cornerstones of the Bulls' 1991–1993 championship teams. The 1988 draft failed to yield much, as first-round pick Will Perdue failed to develop as hoped; however, a 1988 trade for center Bill Cartwright provided the Bulls with the starting center they needed. By 1988, the Bulls had assembled their starting five players (guards Jordan and Paxson, forwards Pippen and Grant, and center Cartwright) for the team that would reach five consecutive Eastern Conference finals from 1989–93, and win three consecutive NBA Finals from 1991–93. Krause continued in 1989 and 1990 to add some important depth to the roster. The Bulls picked B. J. Armstrong in the 1989 NBA draft, although first round pick Stacey King played only a reserve role. Their 1990 NBA draft pick Toni Kukoč failed to provide an immediate impact, as he continued playing professionally in