Football may never see Messi-Ronaldo rivalry again: Oliver Kahn

German football legend Oliver Kahn called it "truly remarkable" that Argentina captain Lionel Messi and Portugal captain Cristiano Ronaldo continue to play. He further said, "Football may never see another rivalry with that level of consistency and excellence." He added that their rivalry was never built on words but on performances, saying, "They pushed each other to become even better."