Bruce Chen tossed seven shutout innings but the Marlins broke a scoreless tie with the game-winning RBI in the 10th inning on Tuesday night.
The Royals won for the 17th time in their last 20 games as Kansas City defeated the Miami Marlins on Monday night.
James Shields picked up his first home win in more than three months and the Kansas City Royals have won seven consecutive series for the first time in 22 years.
Justin Maxwell and Alex Gordon each hit solo home runs and the Royals added six runs in the 6th inning for a come-from-behind victory over the Boston Red Sox.
Bruce Chen kept the Boston Red Sox off-balanced at Kauffman Stadium on Thursday night as the Royals earn their 16th win out of 20 games since the All-Star break.
The Kansas City Royals rallied to capture the series finale against the Minnesota Twins on Wednesday night at Kauffman Stadium.
Pinch-hitter Justin Maxwell homered deep into the left-field seats leading off the 12th inning.
Eric Young Jr. hit a home run with two outs in the 11th inning to stop the Royals’ winning streak at nine.
Lorenzo Cain robbed a two-run HR in his first game back in center field to help lead the Royals top Minnesota for a series sweep.
The Kansas City Royals edged the Minnesota Twins on Wednesday night to earn their eighth straight win.