Selig: too soon to prove if HGH test valid

Baseball commissioner Bud Selig says it's too soon to determine whether a blood test for human growth hormone can be used for minor leaguers.

The United Kingdom Anti-Doping authority announced a two-year ban on Feb 23 for rugby player Terry Newton, saying he had tested positive and was the first athlete suspended for using HGH.

Speaking on Monday night before receiving a lifetime achievement award at the annual dinner of the Jackie Robinson Foundation, Selig said Dr Gary Green, the sport's outside expert, and other medical staff were examining the data. Selig said the scientific experts haven't been able to give him a timeframe for their conclusions.