Barry Bonds enters his perjury trial where his defense team used the old flaxseed oil defense.
The jurors weighing the Barry Bonds perjury case will return to work for a fourth day after failing to reach a verdict Tuesday in San Francisco.
After breaking briefly for lunch shortly after noon, jurors resumed deliberations Tuesday in an attempt to reach a verdict on the four charges pending against Bonds.
But the eight women and four men could not come to an agreement.
The jury began deliberating last Friday.
Bonds is charged with three counts of lying to a grand jury in 2003 and one count of obstruction. Prosecutors allege that Bonds lied when he denied knowingly taking steroids and human growth hormone.
The third count of making a false statement alleges that Bonds lied when he said that no one other than his doctor ever injected him with anything.
The fourth charge is a catch-all count of obstruction, which alleges that Bonds' hindered the grand jury's sports doping investigation by lying.