Home-run king Barry Bonds was convicted of obstruction of justice for impeding a grand jury investigation into illegal steroid distribution, closing a sordid chapter in a scandal that ensnared some of baseball's greatest players.

The verdict Wednesday against the former San Francisco Giants star capped a nearly seven-year probe that focused on Bonds' denials under oath about knowingly using performance enhancing drugs.

Bonds, 46, sat grim-faced, showing no emotion when the verdict was read in a courtroom packed with reporters.

The jury of eight women and four men, which began deliberating Friday morning, also deadlocked on three counts of perjury.

The trial culminates an era that saw the reputations of some of the nation's top athletes tarnished by disclosures of steroid and other drug use and that forced professional sports to grapple with calls for reform.

Jurors said they concluded that Bonds had been evasive before the grand jury, but they disagreed on whether he had lied to the panel about knowingly using steroids or human growth hormones.

One juror, a 60-year-old engineer who identified himself as Steve, said he was glad that the trial had taken place because he has a daughter who plays soccer.

"I'd like to see a level playing field," he said after the verdicts were read.

The juror called the ballplayers who testified about their own drug use at the trial "true heroes." He said: "I believe there is one man who just couldn't do it because of who he is."

Other jurors questioned the government's case against the athlete.

"I think the government feeling was they had a really big fish with Bonds, and they wanted to finish what they started," said jury foreman Fred Jacob, 56. "Maybe they tried a little too hard to make him look guilty."

Defense lawyers said they would ask to have the obstruction of justice count set aside. They questioned how a jury could have found that Bonds tried to impede an investigation without finding that he lied.

U.S. District Judge Susan Illston set a hearing for May 20 to address that question and sentencing.

The probe into Bonds began with an investigation into a Bay Area laboratory that was selling illegal steroids to professional athletes and expanded to include athletes suspected of lying to investigators. Bonds, holder of baseball's hallowed record for most home runs, was the probe's highest profile quarry.

Bonds' career record stands at 762 home runs, surpassing Hank Aaron and Babe Ruth.

"In terms of his legacy, it's officially tainted," said Robert Talbot, a professor at the University of San Francisco School of Law who has followed the trial. "It essentially says that he knew he was cheating."

The verdict raises questions about Bonds' chances for the Hall of Fame.

"If the conviction stands, that cannot help his chances," said John Thorn, an official historian of major league baseball. If Bonds and others are left out of the Hall of Fame, he said, "that will be a sad and harsh verdict on their place in baseball history."

Though federal sentencing guidelines for the conviction recommend 15 to 21 months in prison, many legal analysts expect Bonds to be sentenced to home confinement if the verdict is upheld.