But as an offensive lineman, particularly one playing alongside All Ivy tackle Greg Brown and All-Ivy guard Mike Corbat, Cash rarely stand out to be an individual on the field.
Rather, it is in the teacher room, with fierce pre-game psych sessions that Cash distinguishes himself.
"If you ever saw Harry-before a game, banging his head against a locker, intensity dripping out his ears, you'd feel sorry for the guy who has to face him is the first quarter," Martin says.
Cash claims that his roommate's description is exaggerated, but he admits. "Sometimes, you start thinking about what you have to do too soon, and the adrenaline just starts flowing and you want to hit things".
As outlandish as some of his locker room antics might seem nothing could rival the time that Cash showed up at training camp with his entire head shaved save for a patch of hair that formed the letter. H "Unless, of course, it was the time he decided to have a Yale bulldog, transfixed by a knife tattooed on his hip.
Those may sound like mere stunts, but according to Cash's teammates they demonstrate the total commitment to Harvard football that has earned him almost universal respect.
"That was a classic Harry Cash move," Martin said of the head shaving maneuver.
That was my sophomore year. I was still young and crazy then," Cash says, " I always used to shave my head in high school-it gets pretty hot underneath that helmet-and so I thought that year I'd put an "H" up there.
For the Game, however. Cash is taking a very practical approach, " We have to put that disaster from last Saturday (Penn's 23-21 win behind us. We came into this season thinking we were champion, and we want to go out like champions,"