While watching Sunday night’s box-office affair between the Houston Rockets and Milwaukee Bucks, perhaps the saying speaks more to the mental exercise of what it takes to play defense and get stops. “Heart and will,” James Harden said. “Everybody says we’re undersized — and they got a couple of offensive rebounds on us just cause they have 7-footers and whatnot — but you gotta just keep fighting, keep fighting. Once we get that ball, we’re out, so it just takes good spirit, fighting and making sure we’re communicating defensively and in our right positions.”