Pittsburgh Steelers observed a moment of silence before the game against the Las Vegas Raiders at Acrisure, in memory of former fullback Franco Harris who died on Tuesday. He was 72 years old.

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Watch the video here:

Harris was expected to be at the Acrisure Stadium during the game against the Raiders as it was the 50th anniversary of his legendary Immaculate Reception, which happened in 1972.

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The Steelers had announced that they would retire Harris’ number 32 jersey on the 50th anniversary in Harris’ honor. However, Harris’ death led to a drastic change in their plans.

Due to Harris’s recent social media activity and his day-before-death interactions with visitors at the Heinz History Center, which included a live interview with KDKA-TV from the Heinz History Center, his death was regarded as unexpected.

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His passing was contrasted to that of Pittsburgh Pirates hero Willie Stargell, who passed away just two days after having a bronze statue of him unveiled at PNC Park and on the same day as PNC Park’s formal inauguration in 2001.

Harris scored 10 rushing touchdowns and four receiving touchdowns in his first season with the Steelers in 1972. He carried the ball 188 times for 1,055 yards. He gained 5.6 yards per carry on average.

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Harris was chosen for nine straight Pro Bowls from 1972 and 1980. He was also awarded All-Pro in 1977. In eight seasons, Harris amassed more than 1,000 more rushing yards than Jim Brown.