Marco Chagas
Marco António Chagas Martins is a Portuguese former racing cyclist who is a cycling commentator on RTP. A professional rider from 1976 to 1990, he won the Volta a Portugal four times, in 1982, 1983, 1985 and 1986, making him the second most successful rider in the competition, after David Blanco. Chagas was stripped from his win at the 1979 Volta a Portugal due to doping.
Major results
;1976;1977
;1978
;1979
;1981
;1982
;1983
;1984
;1985
;1986
;1987
;1988
;1989
;1990
Grand Tour general classification results timeline
| Grand Tour | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 |
| Giro d'Italia | — | — | — | — | — | — | — | — |
| Tour de France | 41 | — | — | — | 77 | — | — | — |
| Vuelta a España | — | — | — | — | — | — | — | DNF |
| DSQ | Disqualified |
| DNF | Did not finish |