Scott Diamond, who is likely the most under appreciated rookie pitcher in the majors this season, at least on a national level, lifted his won-lost record to 7-3 with a 7-2 victory over the Royals on Saturday afternoon. Diamond is only the third rookie in the 112-year history of the franchise (beginning in Washington back in 1901) to start a season by winning at least seven of his first 10 decisions, all as a starter. Bump Hadley started 8-2 for the Senators in 1927 and Glen Perkins had a 7-3 mark for the Twins in 2008. Diamond’s 2.63 ERA is lower than the ERAs produced by either Hadley (3.04) or Perkins (4.08) through the game in which they had their 10th decision.