A-Rod’s choice of roommate would throw everyone for a curve — the Yankees star has a case of Linsanity.

“Wow, what a run,” Alex Rodriguez said of Knicks point guard Jeremy Lin yesterday at spring training in Tampa, Fla. “If he is still looking for a place to crash, he can crash at my apartment. Imagine the tabloids then …

“The great thing about Linsanity is that it kind of reminds you how much fun the game can be.”