Martín was born in Huelva. He started out as a caddie and turned professional in 1981. He has been a member of the European Tour for more than twenty seasons, and in 2005 he became the first Continental European golfer to make 500 appearances on the tour.
Martín has finished runner-up on the Legends Tour on six occasions and is still to date his best finish on the senior tour.
He earned a place on the 1997 Ryder Cup team but was forced to withdraw due to a wrist injury.
| Best Legends Tour Finish | 2 |
| Professional Wins | 11 |
| Turned Pro | 1981 |
