Valencia, Spain -- (Sports Network) - Conchita Martinez, one of the greatest Spanish women's tennis players of all-time, announced her retirement from singles play Saturday after 18 years on the WTA Tour.

The announcement came one day shy of Martinez' 34th birthday.

"I have been away from the courts for quite some time now due to a serious injury to my Achilles tendon," Martinez said. "I have had a lot of time to think and have decided the best thing for me is to retire from singles competition. I am leaving open the slight possibility of playing doubles at some point in the future, depending on the status of my injury following surgery."

The 1994 Wimbledon winner, Martinez won 33 singles titles on the WTA Tour. However, what's most remembered is that '94 Wimbledon crown, when Martinez won four straight three-set matches in the last four rounds, culminating with a victory over former nine-time Wimbledon champion Martina Navratilova in the title match.

"I have had so many great moments during my 18-year professional tennis career," Martinez continued. "The most precious moments that will always hold a very special place in my heart are winning medals for my country during the Olympics and helping Spain win five Fed Cup titles. On a more individual level, my Wimbledon title was a dream come true."

Martinez was ranked in the top 50 or higher at the end of each one of her 18 seasons. She ends her career sixth on the all-time singles match wins list. She reached a career-best No. 2 ranking in 1995.