NEW YORK — Unheralded backup guard Terrence Williams was one of only two bench players to see action for the Celtics  on Wednesday night, but he provided four points and four rebounds in 17 minutes off the bench as the Celtics beat the Knicks, 92-86, in Game 5 at Madison Square Garden.
“I know it sounds cliche, but I know how to play basketball,” Williams said when asked about not being overwhelmed by the big-game situation of Game 5. “One thing I’ve learned from being here [with the Celtics] is to be ready.”
Williams came off the bench several times in the second half, including midway through the third quarter when Jeff Green  was struggling with his offensive game.
Celtics coach Doc Rivers  trusted Williams enough to put him in the game in the second half for Green, as the team’s season hung in the balance.
“He controlled the ball,” Rivers said. “He can handle the pressure and bring it up the floor. He got guys into our stuff. He allowed us to get organized. Sometimes you pull out a card. He was it tonight. We loved his size, he was rebounding. What we are asking him to do is what he has never done before. He is defending. Everybody told me he can’t defend, but he is proving everyone wrong. He is doing it for us.”
After Williams came off the bench ahead of Jordan Crawford, Courtney Lee , Shav Randolph and Chris Wilcox , all of whom did not play, it’s fairly obvious that he will be ready again for Game 6 Friday night in Boston.