The Ahtletics and Kansas City Royals have had some overlapping players over the past year or so, partially because of the trade they made at last year's deadlin

In the 10th, Royals closer Carlos Estévez came on from the bullpen. He threw a wild pitch and allowed a double to Brewers star Jackson Chourio. Eventually, the score was tied, 2-2, with runners at first and second and no one out. Then, one moment caught the attention of home plate umpire John Tumpane, who called a balk on Estévez. What happened?

KC took the opening game of the series 8-2 to move their record to 3-4. The Royals are now tied for the first spot in the AL Central with the Detroit Tigers.