Rivera conspicuously not surprised about Clemens

The Yankees have finalized a three-year, $45 million deal with Mariano Rivera, meaning that the team will be paying the already-slipping closer $15 million when he is 41 years old.
After signing the deal, Rivera told reporters that he was surprised Andy Pettitte took Human Growth Hormone and was included in George Mitchell's report on performance-enhancing drugs in Major League Baseball.
Rivera conspicuously made no mention of being surprised that Roger Clemens used steroids and was featured prominently in said report.