The Golden State Warriors went into halftime of Game 1 of the 2016 NBA Finals with a nine-point lead over the visiting Cleveland Cavaliers, but a poor defensive start to the third quarter and some strong shotmaking by the Cavs cut that lead down in a heartbeat, leading Warriors coach Steve Kerr to call a timeout to talk it over ... and, evidently, work out some frustration on his whiteboard in the process:
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Sure, Kerr might throw out the laid-back West Coast vibe, but don't let the smooth taste fool you; he's as competitive as they come, and apparently, he's got hands of stone.
"We came out after halftime and we completely lost focus and throwing careless passes," Kerr said after the game. "We got lost defensively a couple of times, and we had to kind of regain our focus and our edge."
This isn't the first time this season Kerr's been caught assaulting his whiteboard during a nationally televised game:

... nor is it the first time he's broken one, according to Brian Mahoney of the Associated Press:
The shooting and passing weren't good, though apparently coach Steve Kerr's clipboard toss was impressive.
''He broke the clipboard, then threw it,'' Draymond Green corrected. [...]
''Coach Kerr got on us pretty good,'' [Klay] Thompson said of the clipboard toss to start the second quarter.
''He was very animated on the sideline and we responded well to it. He told us we were playing very embarrassing and just to pick it up.''
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The Warriors wound up coming back that night, blowing out the New York Knicks in Madison Square Garden ... and, despite facing LeBron James, Kevin Love, Kyrie Irving and the Eastern Conference champion Cavs, the Warriors came back on this night, too.
Behind stellar outings from reserves Shaun Livingston, Andre Iguodala and Leandro Barbosa, the Warriors rebuild their lead with a 15-0 third-and-fourth-quarter-spanning run, pushing the advantage to as many as 20 points on their way to a 104-89 win that gives Golden State a 1-0 lead in the best-of-seven Finals. Sure, the drive to defend home court and draw within three wins of a second straight NBA championship offered plenty of motivation on its own, but not wanting to make good ol' Kung-Fu Kerr even more angry probably didn't hurt, either.
"With Coach Kerr and the clipboard, he got a little better," said a smiling Draymond Green, who played strong defense and stuffed the stat sheet with 16 points, 11 rebounds, seven assists, four steals and a block in 40 minutes. "He broke a clipboard in Madison Square Garden earlier this year, and it didn't go so well. So congratulations to him on doing a better job tonight."
After the win, ESPN's Rachel Nichols asked Kerr about what goes through his mind when he attacks his clipboards — since, y'know, he seems to be doing it often enough to constitute a trend worth watching — and whether he feels it sometimes helps to destroy something.
"It does," he replied. "Destruction tends to ease some of the anger. So I try to take it out on a clipboard instead of a player. So it's better that way."

Kerr takes it out on the clipboard, and the Warriors take it out on the opposition. It's a recipe that seems to be working pretty well.
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Dan Devine is an editor for Ball Don't Lie on Yahoo Sports. Have a tip? Email him at [email protected] or follow him on Twitter!
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