The eight-woman, four-man panel was sealed off in a jury room Friday morning to begin deciding a verdict in the federal perjury case against Bonds. Prosecutors and defense lawyers wrapped up their closing arguments on Thursday afternoon but the jury decided to break before deliberating then.
Baseball's all-time home run leader is charged with three counts of lying to a grand jury in 2003 and a count of obstruction for denying that he knowingly took performance-enhancing drugs and for saying no one other than his doctors gave him an injection.
Bonds was originally indicted in November 2007.
If convicted on any of the charges, federal guidelines recommend a prison sentence of between 15 and 21 months, though Bonds' punishment could be far less severe.