Dwight Clark, who made one of the most famous catches in NFL history for the San Francisco 49ers, has died at the age of 61, according to a statement his wife put on Twitter.

Clark died from the complications of ALS, a disease he was diagnosed with in 2015. The 49ers released a statement mourning one of the greatest wide receivers in their history.

“The San Francisco 49ers family has suffered a tremendous loss today with the passing of Dwight Clark,” the team said in a statement via ESPN. “We extend our condolences and prayers to Dwight's wife, Kelly, his family, friends and fans, as we join together to mourn the death of one of the most beloved figures in 49ers history…. The strength, perseverance and grace with which he battled ALS will long serve as an inspiration to so many. Dwight will always carry a special place in our hearts and his legacy will live on as we continue to battle this terrible disease.”

After being diagnosed with the disease, Clark's health went downhill rapidly. Last October, when the 49ers hosted the Dallas Cowboys, they held “Dwight Clark Day” where his former 49ers teammates gathered one last time with Clark. From a Levi Stadium suite, Clark addressed the crowd saying he just wanted to see his teammates one more time.

Clark is most well known for his catch in the 1982 NFC Championship game against the Cowboys. The catch in the back of the end zone propelled the 49ers to their first Super Bowl, which they later won. It helped start the dynasty of the 49ers, and the play will be remembered forever.  Thoughts and prayers go out to Clark's wife and his family.