Temperatures have soared across large parts of United States Teams have stopped taking batting practice in extreme heat At Wrigley Field, mist machines tried to cool the crowd. At Yankee Stadium, only one player took batting practice on the field. In Cleveland, rules were relaxed on what fans could bring into the park. Even for a sport that promotes high heat, Saturday was a scorcher across the majors. The National Weather Service said it was part of “a dangerous heat wave” gripping much of the country. Hours before Baltimore played Boston at sweltering Camden Yards, Orioles manager Brandon Hyde pulled aside starting catcher Chance Sisco and issued a stiff directive. “I told Chance, I don’t want him hustling on and off the field. I want to see him walking,” Hyde said. “When you’re a catcher in these type of games, it’s not easy. After the eighth inning, his face was beet red.” It was 97F (36C) for the first pitch and no relief in sight, either. The temperature was forecast to top 100F for Sunday afternoon’s