Jason Giambi now spends his time taking care of his young children rather than clobbering baseballs. But the former baseball star is keeping his hand in the game through a new virtual reality practice system.

« You actually feel like you’re facing the pitcher. He’s going through his windup, he’s going through his pitches. You can even pick up seams on the baseball, » Giambi told CNBC.

Giambi, 44, gives hitting tips in a training program unveiled last week by Eon Sports VR. Using a virtual reality headset, players simulate at-bats, gauging balls and strikes and pitch delivery. EON, founded in 2013, and other companies have rolled out virtual reality simulators to supplement practice in a variety of sports. Eon makes a football simulator already used from the high school level to the National Football League.

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