Magic number for the Royals might be a bit premature..... granted it would take a massive turn of events but there have been some dramatic collapses in the past by front runners
AL CENTRAL TOP 3 Royals 71-46 Twins 59-58 Tigers 56-61
However, the Cards can't afford to think of 'magic' numbers
NL CENTRAL Top 3 Cardinals 75-42 Pirates 69-46 Cubs 67-49
Then again .....
if The Pirates or the Cubs were in the AL Central neither would the Royals