According to Bob Dutton of The Kansas City Star, the Royals placed Perez on the seven-day concussion disabled list.
The Royals have been on a hot streak as of late, winning 10 of their last 11 games and trying to make a push to make the postseason. However, it has been next to impossible to gain ground in the AL Central, as both the Detroit Tigers and Cleveland Indians have also gone 9-1 in their last 10 games, with the Tigers riding a seven-game winning streak.
The Royals remain 7.5 games back of the Tigers for the lead in the AL Central, and now the team will be forced to continue without one of its three All-Stars for a week.
Perez has been key to the team's success this season. He ranks second among AL catchers in batting average (.278) behind only Joe Mauer of the Minnesota Twins. He also has four home runs has 43 RBI on the season. He is among the team's top producers across the board and has batted cleanup for the team for much of the season.
What's more, Perez has been arguably the best defensive catcher in MLB this season, posting a fielding percentage of .991 and making spectacular plays look routine, including this double play and this incredible throw to first.
The Royals are running out of time to overtake the Tigers and Indians in the AL Central, and without Perez it will be very difficult to do so.