Why does it matter how many fouls Sword has in the second half if we're down by 10+? The game can be decided at the end of the first half just as easily as the second half.
Exactly. He may or may not miss 10 minutes by fouling out if you leave him in. But he 100% will miss 10 minutes if you sit him. Sword played 27 minutes and didn't foul out. He damn sure would have played more than 27 minutes if Ray had left him in the game with 2 fouls in the 1st half. The old rule of thumb used to be you didn't sit a player until he got 3 fouls in the 1st half. That was much smarter. And, as 57stratdawg points out, especially if you're undermanned.
Why does it matter how many fouls Sword has in the second half if we're down by 10+? The game can be decided at the end of the first half just as easily as the second half.