Roger Clemens' one-time mistress, country singer Mindy McCready, talks about the power pitcher's sexual prowess in her upcoming sex tape, Baseball Mistress, RadarOnline.com has learned.

Fox's PopTarts reports that the tape features McCready and a former boyfriend named “Peter” engaging in explicit sex acts, but that in the video, McCready also kisses and tells about other partners, saying that Clemens was a "good" lover, although he often struggled to get an erection. She said that another celebrity she slept with, Superman actor Dean Cain, was better endowed than Clemens.

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• Dean Cain
• Mindy McCready
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