No surprise that Archer is #1 1. Chris Archer, rhp, Cubs (Double-A Tennessee) Prior to June 1: 44 1/3 IP, 3.65 ERA, 20 BB, 49 Ks Since June 1: 56 1/3 IP, 0.80 ERA, 20 BB, 58 Ks Royals lefty John Lamb ran off a streak of 35 2/3 consecutive innings without allowing an earned run, but Archer has a nice run of his own. Since the Cubs promoted Archer to Double-A, the 21-year-old hasn't allowed an earned run in five starts, a stretch of 28 1/3 innings. Since giving up a home run to the leadoff batter of the fourth inning on June 22 for high Class A Daytona, Archer has gone 36 2/3 innings—or 110 outs—without an earned run. How is Archer doing it? With a 93-95 mph fastball that touches 97 with downhill plane and a hard slider that is getting grades of anywhere from 60 to 70 on the 20-80 scale, making it one of the best breaking balls in the minors. Archer doesn't go to his changeup much, but he shows feel for that pitch as well with occasional sink and fade. Subscription needed: http://www.baseballamerica.com/online/prospects/prospect-bulletin/2010/2610426.html