KANSAS CITY, Mo. – Following the 7-2 World Series Game 2 win over the San Francisco Giants, a smoke machine pumped fake smoke throughout the air of the Kansas City Royals clubhouse. Or it could have been the residual heat from the Royals bullpen master trio of Kelvin Herrera, Wade Davis and Greg Holland. On Wednesday, the three shut out the Giants' offense to get the final 11 outs of the game. The flamethrowing group has been integral to the Royals' success both during the regular season and, even moreso, in the postseason. Through the Royals' 10 postseason games, the three have pitched 29.1 of the team's 95 innings played. Each has given up a solitary run and HDH, as they've come to be known via shorthand, have combined for 36 strikeouts while producing a WHIP of 0.89. In Game 2, Herrera, the hardest-throwing member of the three, was up first once again as the Royals tied the World Series at 1-1. Throughout the regular season, Royals manager Ned Yost used Herrera almost exclusively for the seventh inning. But after starting pitcher Yordano Ventura gave up two singles sandwiched around an out to start the sixth inning with the score tied at 2-2, Yost went to Herrera to get...