Based in Florida, Betancur comes from Medellin originally and featured in seven Davis Cup ties for Colombia during the 1970s.

He played in Colombia's Inter-Zonal Final against eventual tournament winners South Africa in 1974 and won a dead rubber singles over Byron Bertram.

His Davis Cup career also included a 1979 tie against the United States in Cleveland, where he lost singles matches to John McEnroe and Dick Stockton.

His best performance on the Grand Prix circuit was a semi-final appearance at the 1980 South Orange Open.

Betancur continues to live in Florida and is the director of coaching at Saddlebrook Preparatory School.