Molina and Martina Navratilova teamed to win the 1974 French Open mixed doubles title, beating Rosie Reyes Darmon and Marcelo Lara 6–3, 6–3 in the final.[3] Together with Florența Mihai, he reached the French Open mixed doubles final in 1977, losing to Mary Carillo and John McEnroe. The left-hander played 46 matches in the Davis Cup for Colombia from 1970 to 1979, winning 15 and losing 14 of his singles matches and winning 7 and losing 10 of his doubles matches. In 1974, he led Colombia to the Davis Cup Americas Inter-Zonal Final. He played 11 Tennis Grand Prix doubles finals (2 win) and 2 singles finals (no wins) and reached his highest singles ranking of 22 in April 1976 on the Grand Prix. He is considered to be the best Colombian tennis player of all time.
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (P#) preliminary round; (DNQ) did not qualify; (A) absent; (Z#) Davis/Fed Cup Zonal Group (with number indication) or (PO) play-off; (G) gold, (S) silver or (B) bronze Olympic/Paralympic medal; (NMS) not a Masters tournament; (NTI) not a Tier I tournament; (P) postponed; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.