I don't need to. Fair use suffices. You're entitled to quote enough of an article for purposes of commentary and critique. It's not just copyright law, it's first amendment.
Add in that we are not profiting from the discussion of their content as simple users of this site, and consider that this is a tool to enhance fan interest, which is what creates support for ticket sales and broadcast viewership.
ESPN's web site doesn't have to be self-supporting, even though it very likely is. It's a 24 hour marketing platform for their broadcasts, and it's also a platform for customer/fan engagement. Look at how much stuff they sell us, or try to sell us, and how many fantasy games, live statistics, and archived broadcasts they offer for free to make our visits to their site more "sticky."
Content owners should realize that fan engagement enhances their brands; it doesn't threaten them.
That said, no, you can't take the whole article because that destroys the market for the product. But to quote enough of something for purposes of discussion is fair use.