'"Casey, just seeing him here today, I think he’s taken a big step," Botterill said at FanFest. "He’s taken the summer very seriously. ... He faced some adversity last year. We challenged him a little bit about some of his conditioning in the summer. I think he’s really done that extremely well. I think it’s always that first or second year, that’s where good players take that … [Read more...] about Casey Mittelstadt trying to ‘take that jump’ after challenging rookie season with Sabres