While general manager Dayton Moore said on Wednesday that he believes the rotation "has a chance to be much stronger in the second half," Yost himself feels comfortable with the state of his starters now.
"I don't need to see much improvement because I'm the one who is dictating how far they go," Yost. "I've taken these guys out of games after the sixth inning when they obviously could have gone farther because we have such a dynamic bullpen."
Kansas City entered Sunday's game with the second-best staff ERA in the American League, but the real marvel is its bullpen, which owns a 2.11 ERA, the best in the Majors ahead of St. Louis' 2.36 ERA.
"We can extend [starters] out depending on the health of our 'pen. We're going to have to extend Eddy [Volquez] out today a little bit," Yost said before the series finale with the Blue Jays. "We didn't have yesterday, in my mind, [Kelvin] Herrera or [Greg] Holland. Wade [Davis] could have closed, but we didn't get in that situation.
"You've got to make sure you don't overuse guys."
With the help of Yost's pitching strategy, the Royals became the first AL team to reach 50 wins this season and will enter the break with the most victories in the league.
Jordan Wilson is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.