(CNN)Baseball Hall of Fame pitcher Bob Gibson, known for his inspiring competitiveness and forceful determination, died Friday at the age of 84, St. Louis Cardinals confirmed to CNN.
Gibson announced last year he had pancreatic cancer.
"A standard setter on the mound your entire career and one of the most feared competitors to ever play the game of baseball," Hall of Fame first baseman Frank Thomas wrote of Gibson on Twitter.
The legendary pitcher, who played all 17 seasons of his career with the Cardinals, was a nine-time All-Star, Gold Glove winner and two-time World Series champion.
He was inducted into the Baseball Hall of Fame in 1981, his first year of eligibility.
Gibson was born in Nebraska in November 1935 and was the youngest of seven children, according to the Major League Baseball website.
As a child, he overcame bouts with asthma, rickets and a heart murmur but still went on to become Creighton University's first African American baseball player and basketball player, according to MLB.
Focused and determined as he was, he scored two contracts after college with both the Cardinals and the Harlem Globetrotters before eventually deciding to stick with the former, according to MLB.
In 1968, Gibson won his first Cy Young and MVP awards after finishing the season with 22 wins, a major league record 1.12 ERA and 268 strikeouts. His dominant season in 1968 led MLB to lower the pitching mound the following year.
Gibson retired after the 1975 season as the Cardinals all-time leader in wins (251), strikeouts (3,117), shutouts (56), Games started (482) and complete games (255). The two-time Cy Young winner holds the record for most strikeouts in a World Series game (17) and in a World Series (35).
"I was just out there doing what I knew how to do and that's pretty much as simple as it gets," Gibson said in a previous interview posted in an MLB video this week.
Gibson's death comes just weeks after the passing of two other baseball legends: Hall of Famers Tom Seaver and Lou Brock.
"So sad to face reality that Tom, Lou & now Bob are gone," Cardinals former manager Tony La Russa wrote on Twitter. "Impossible to fill the gaps that exist with them gone. Wishing their families peace."