This is one of the reasons it’s so difficult to be consistently good in college baseball recruiting: A year ago, Arizona coach Jay Johnson evaluated and signed Casa Grande High lefty Gilbert Luna in the Class of 2017. Luna was coming off a season with a 1.19 ERA and 138 strikeouts in 64 innings. This season, Luna injured his arm and was limited to 21 innings, with just one outing of more than five innings.