Oregon State took care of business this past weekend against Long Beach State, bumping them up to #7 in the national rankings and boosting their chances of hosting a regional. The Beavers scored seven or more runs in all three games of the series, and their pitching was rock-solid as well. However, there's still plenty to improve on if they want to make another deep postseason run. Here are three key takeaways from the series against the Dirtbags of LBSU. The starting rotation is still elite It's important to preface this section by pointing out that the Dirtbags are a poor offensive team, with a lowly RPI in the 200s. However, credit should still be given where credit is due. Over the weekend down in Southern California, OSU's starting pitching allowed only five earned runs in 16 innings pitched, all while posting a strikeout-to-walk ratio of 22 to 4.…