PHOENIX — Commissioner Bud Selig said Saturday he's proud of how far baseball has come in attempting to eliminate performance enhancing drugs from the sport.

"It's been an interesting experience for me in the respect that we've cleaned the game up," Selig told reporters during the Milwaukee Brewers' game against the Chicago Cubs. "I'm proud of where we are."

If there's work still to be done, Selig said, it's in being able to test for human growth hormone.

"There's not a test regardless of what people say," Selig said. "If there's a test we'll use it. I can't wait to sit down and tell you that we now have a test for HGH."

Selig wouldn't comment on his office's investigation of Alex Rodriguez following the All-Star third baseman's admission of using performance enhancing drugs.

Selig's lone frustration stemming from the A-Rod situation is in being told that he should have known earlier that steroids were a problem.

"If I sound frustrated it's because you get into revisionism 15 to 20 years later and it's the wrong set of facts you're revising," Selig said. "My frustration is we started (minor league testing) in 1998. Where were we sleeping?"

Selig said positive tests have dropped from 9.1 percent of minor leaguers in 2001 to 0.6 percent last year.

On the economic front, Selig said he and his staff receive frequent updates from all 30 franchises regarding their financial situation.

"We have some clubs that are doing remarkable business and we have some clubs that are struggling," Selig said. "Are we monitoring things? You bet."