The high Class A Clearwater pitching staff leads the Florida State League in just about everything worth leading. The Threshers have the circuit's top ERA (3.35), WHIP (1.23), hit rate (7.9 per nine innings) and strikeout rate (8.1 per nine).

One of the key cogs in the run-preventing, bat-missing machine has been righthander Brody Colvin. But as mentioned in today's Prospect Bulletin, the 20-year-old Phillies prospect has been difficult to evaluate in an injury-abbreviated campaign. But his performance yesterday against Jupiter speaks for itself.

Colvin improved to 2-3, 3.82 with a masterful eight-inning performance in which he struck out nine, walked one and allowed just three hits. He allowed only one run, which was a welcome sign after a pair of middling starts, totaling 12 1/3 innings, resulted in seven runs allowed on 15 hits.

• Braves 2010 fifth-round pick Phil Gosselin hasn't had any trouble jumping to the high Class A Carolina League this season. The 22-year-old second baseman doubled his season home-run total yesterday with a 2-for-4 day that included a solo homer and then a three-run shot. Through 304 at-bats for Lynchburg, Gosselin is batting .289/.346/.438 with 23 doubles. He ranks fifth in the CL in average.

• Reds shortstop Billy Hamilton went 1-for-3, stole two bases in two attempts and also committed his 27th error of the season in an eventful game for low Class A Dayton. The 20-year-old Hamilton is batting just .242/.296/.316 through 335 at-bats, but with 66 steals (in 77 attempts) he easily outpaces No. 2 thief Rymer Liriano, the low Class Fort Wayne right fielder who has 44 in 58 attempts. Other minor leaguers with more than 40 steals: the Mariners' Danny Carroll with 43, the Giants' Tyler Graham with 43 and the Blue Jays' Anthony Gose with 41.

• Gwinnett right fielder Stefan Gartrell won the Triple-A home run derby in Salt Lake City by connecting for seven homers in the final round and 16 total. Triple-A home run leader Bryan LaHair, who hit 25 for Iowa in the first half, did not pose the biggest threat to Gartrell. That distinction went to 17-year-old Kayden Porter, a high school junior from nearby Spanish Fork, Utah. Using a metal bat, Porter launched five home runs in the final round.

"When I was 18, I couldn’t do that," Gartrell told the Salt Lake Tribune. "He’s got lot of pop. I was proud of (Porter). I just met him, but I was proud of him."

The 27-year-old Gartrell launched 17 home runs for Gwinnett (and one more in seven games with Charlotte) in the first half, while pacing the International League in slugging (.558) and extra-base hits (43).