In the season opener for both teams, Colorado and Eastern Washington clash on Monday night in Boulder, Colo., after an offseason of big changes.Colorado won a program-record 26 games last year, including two in the NCAA Tournament (First Four and Round of 64). The Buffaloes are retooling after losing all five starters, their top five scorers and top six rebounders, including NBA draft picks Cody Williams, Tristan da Silva and KJ Simpson. Eddie Lampkin Jr. transferred to Syracuse, while J’Vonne Hadley is now playing at Louisville.That poses a challenge as Colorado — predicted to finish 15th out of 16 teams in the Big 12 — moves into a loaded conference that features five teams in the preseason top 10. Kansas is No. 1 followed by Houston (No. 4), Iowa State (No. 5) and Baylor (No. 8). Arizona, an old rival from the Pac-12, is No. 10.”I think it’s put a chip on our players’ shoulders,” Buffaloes coach Tad Boyle said of the preseason prediction. “I know it’s put a chip on my shoulder.”Boyle enters his 15th season leading the Buffaloes. In his first season, they were in the Big 12 before departing to the Pac-12 for 13 years. The change in landscape doesn’t change his expectations.”The depth of the Big 12 is deeper and the venues are much more difficult to play, having coached in both leagues, and that’s going to be the big difference,” Boyle said. “It’s a hell of a challenge and we’re looking forward to it as a team, as a program.”