How a 1972 book about tennis helps Warriors coach Steve Kerr deal with high-pressure situations

Last night, the Golden State Warriors faced a tense situation, eerily reminiscent of the 2016 NBA Finals: They were up 3-1 against the Cleveland Cavaliers going into Game 5 at Oakland's Oracle Arena. The last time that happened, the Cavs came back to win it all. The pressure was on for Warriors coach Steve Kerr, who sat out most of the playoffs due to health issues related to a back surgery gone wrong.