Washington DC [US], February 3 (ANI): Actor Sylvester Stallone paid tribute to his long-time friend and ‘Rocky’ co-star Carl Weathers, who died on Thursday at the age of 76. Weathers was known for playing boxer Apollo Creed in the first four ‘Rocky’ films, according to Variety. He took to Instagram to share a video on his lifelong collaboration with Weathers, which began with the ‘Rocky’ series and continued for decades. The actor delivered the statement while standing in front of a painting of their characters, Rocky Balboa and Apollo Creed facing off in the ring. “Today is an incredibly sad …