Bits: Dunn returns, Vogelsong struggles

Chicago White Sox first baseman/designated hitter Adam Dunn returned from a 10-day absence (oblique injury) Saturday with two hits, then homered Sunday, his 39th of his comeback season. Check to see if Dunn became available in your league because he's definitely worth activating again. It's tough to properly evaluate Dunn, who is hitting .213 and is well outside the top 100 on the ESPN Player Rater, but if you crave power, he delivers.

Pittsburgh Pirates third baseman Pedro Alvarez also has plenty of power; he swatted his 28th and 29th home runs of the season Sunday. Like Dunn, Alvarez isn't likely to ever contend for a batting title, but he has improved his walk rate, and he hit .322 in August, a far cry from his .191 batting average for all of 2011. Alvarez remains available in nearly 40 percent of ESPN standard leagues.

• Someone to avoid is San Francisco Giants right-hander Ryan Vogelsong, who permitted seven runs (six earned) at Arizona Sunday on five hits and four walks. Since beating the Cardinals on Aug. 8, Vogelsong has posted a 10.31 ERA in seven outings. Vogelsong has pleasant season numbers, but whether it's fatigue or a mechanical issue, you should look elsewhere.

Milwaukee Brewers right-hander Wily Peralta threw eight innings of two-hit scoreless baseball against the New York Mets Sunday, striking out five and winning for the second time in three starts. Peralta, 23, was regarded as the organization's top prospect this season, but he struggled at Triple-A Nashville (4.66 ERA, 1.58 WHIP). He's risky for fantasy owners this month but still has a bright future.

New York Yankees infielder Eduardo Nunez stole three bases and scored two runs Sunday and has 10 steals with his 68 at-bats for the big club after struggling at Triple-A Scranton/Wilkes-Barre (.227). Nunez stole 22 bases for the Yankees a year ago, and with Derek Jeter and Alex Rodriguez seeing more time at DH, Nunez will play regularly and should keep running in the final weeks.

Los Angeles Angels right-hander Kevin Jepsen saved Sunday's win over the Kansas City Royals, as right-hander Ernesto Frieri was unavailable after Saturday's debacle (he allowed a pair of home runs in a loss). Jepsen has been better than Frieri since the All-Star break, with a 1.35 ERA, while Frieri's post-break ERA is 5.23, with six home runs allowed. Perhaps the Angels will consider a change to Jepsen, but for now it remains Frieri's job.