Career years: 2003-Present

Unless you want a calculus lecture, don't mention the word "playoffs" to a Tony Romo stan. Yes, his regular season numbers are Pro Bowl worthy, but every Pro Bowl caliber quarterback aspires to playoff wins and Super Bowl titles—Romo has one playoff win in seven seasons as a starter. Yet Romo stans can find all sorts of advanced metrics to fend off his haters and prove that Romo is actually a great quarterback. We'll start listening when he makes it out of the second round of the playoffs.