I'm assuming that Boston's second baseman Todd Walker, being a baseball player, has been a fan as well for some time. Why, then, would he say something like this?
Uh--how many times, in any sport, have you seen statements like this come back to bite the speaker right on the jock?
(See, not all of us Yankee fans are arrogant... 1982-94 was enough to put a little humility into anybody.)