Yordano Ventura Tributes Pour In At KC Royals Stadium (PHOTOS)

K.C. Royals fans flocked to Kauffman Stadium on Sunday to pay tribute to Yordano Ventura -- the 25-year-old pitcher who was killed in a car crash in the Dominican Republic over the weekend.

Flowers, notes, balloons, candles and more were placed around the stadium ... most tributes bearing his nickname, "Ace."

Ventura was a favorite among Royals fans -- not only did he have a blazing fastball, but he was a fiery competitor ... and the people loved it!

Ventura was part of the Royals club that won the World Series in 2015 -- the same year he signed a 5-year deal reportedly worth more than $20 million.

Investigators are still trying to figure out what caused the crash.

R.I.P.