[Recon Dad]

If I were to bet on Tiger's beefing up I would bet on Human Growth Hormones. A lot of testing was going on at Stanford at the time he was there. The swim team were involved to see if they could speed up recovery time between workouts.

Then again looking at his Dad he was going to be bulkier naturally. Combine the weights and you build mass.

[MAD-AS-HELL]

I would bet on HGH. Almost impossible to detect and you can see how Tiger’s face has sorta ballooned up, a tale tell sign of HGH usage. He was a lanky kid who got very bulky in a very short time. Not unlike Sosa and Barry, who also saw their heads swell up and look bloated like Tiger.