http://sports.espn.go.com/mlb/news/story?id=2051595
"NEW YORK -- Minnesota Twins pitcher Juan Rincon was suspended for 10 days Monday, making him the fifth player disciplined under Major League Baseball's new policy on performance-enhancing drugs.
Rincon was a key contributor to the Twins' AL Central-winning team last season. He went 11-6 with two saves and a 2.63 ERA in 77 games. This year, he was 2-1 with a 2.25 ERA in 12 appearances."
Yes, pitchers can use steroids. Where they can help most is in recovery time between outings. Juan Rincon is also the best player that has been suspended so far.