Here's a problem the Kansas City Royals didn't expect to have in September: a chickenpox outbreak.

All-Star setup man Kelvin Herrera and right fielder Alex Rios have both been diagnosed. Players infected —€“ and right now the team believes there are only those two — could miss up to two weeks.

According to the Kansas City Star, Rios was sent home Sunday and Herrera was sent home soon afterward (both on chartered flights). The Royals played in Tampa over the weekend.

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