Safety Isaiah Lewis has a team-high five pass breakups for the Colorado Buffaloes. Opportunities to play on defense didn’t come often for Isaiah Lewis during his first three years with the Colorado Buffaloes. Two games into his fourth season, Lewis is not only playing, but he’s arguably been the best member of the secondary for the Buffaloes (2-0), who are slated to visit 19th-ranked Southern California (3-0) on Saturday. “I follow the model to just trust the journey and stay true to the process,” Lewis said.