Zack Greinke faces former team as Astros host Royals

As Houston gets set to host the Kansas City Royals on Monday, there have been instances this season where the Astros' reliance on a three-man bench has limited the options of manager Dusty Baker.

In the finale of a three-game series against the Seattle Mariners Sunday, Baker used pitcher Lance McCullers Jr. as a pinch-runner for slow-footed catcher Martin Maldonado in the 10th inning. Baker had already inserted Chas McCo