I have no idea how he did it. Anybody who has had mono knows how debilitating it is. It knocked me off my feet for 2 weeks sophomore, I missed a lot of class took an incomplete, and just laid in bed for days. Yet he some how played baseball with mono, I don't know whether to admire him or think he is really stupid. He should have abstained from physical activities, not simply because he didn't feel well, but because he could have ruptured his spleen. A high speed collision could have been very dangerous. Plus the risk of spreading it to other players. I am glad he is healthy, and hopefully he will put up some solid numbers as a back up infielder this year.