 The Baltimore area under an excessive heat warning until 8 o'clock tonight. Code red heat emergency remains in effect for Baltimore City. Cooling centers and pools open extra hours. Orioles ace Corbin Burns will be the American League starter for tomorrow night's All-Star game. Tonight, Gunnar Henderson among the contestants in the Major League Home Run Derby competition on this first night of the All-Star break. Lamar Jackson and other Ravens quarterbacks arrived in Owens Mills today for training camp to join