Major League Baseball announced plans to bolster its drug-testing policy, calling for in-season testing for human growth hormone (HGH) and improved methods to track abnormal levels of testosterone.

MLB and the player's union jointly agreed upon the decision to modify their collectively-bargained Joint Drug Prevention and Treatment Program.

Commissioner Bud Selig announced the additions yesterday at the owners' meetings in Paradise Valley, Ariz.

Players were already subject to blood tests for HGH during spring training and urine tests for other performance-enhancing drugs (PEDs).

In addition, the World Anti-Doping Agency's laboratory in Quebec will record testosterone readings and monitor for any changes, thus tracking the appearance of any changes in testosterone levels.

"This is a proud, and great, day for baseball," Selig said. "We'll continue to be a leader in this field and do what we have to do."

The increased testing arrives just one day after an unusual vote for the Baseball Hall of Fame.

The voters declined to elect any new members, including elite players like slugger Barry Bonds and pitcher Roger Clemens, for their involvement in the game's steroid era.