He's been really solid this year. I think he ends up as the next Sean Marshall/James Russell type. By type if you mean LH relief pitcher, then yes. But not results. Since 2010 (Marshall's first full year as a relief pitcher) Marshall has a higher K/9 rate every year in MLB than Rusin does in AA/AAA. Marshall has put up fWAR's of 1.7, 2.6, 1.9 the last 3 years, Rusin isn't ever going to do that in MLB. Marshall's FIP and xFIP are also 1-2 full points lower at the MLB level than Rusin's are at the AAA/AA level over the last 3 years. Rusin is nothing more than minor league fodder.