Willem Maris and Toomas Leius (r.) (1959)
|Country (sports)||Soviet Union|
28 August 1941 |
|Grand Slam Singles results|
|Australian Open||3R (1969)|
|French Open||QF (1965)|
|Wimbledon||3R (1960, 1963)|
|US Open||2R (1962)|
|Grand Slam Doubles results|
|Australian Open||QF (1969)|
|Grand Slam Mixed Doubles results|
|Australian Open||1R (1969)|
|French Open||F (1971)|
|Davis Cup||FEu (1967, 1969, 1970)|
Leius was the boy's singles champion at the 1959 Wimbledon Championships. He won the Soviet Championships in 1963, 1964, 1965 and 1968. Other good performances during his career include reaching the final of the 1964 Queen's Club Championships, which he lost to Roy Emerson, and taking Rod Laver to five sets at the 1969 Heineken Open. He was a gold medalist in the mixed doubles at the 1970 Summer Universiade in Turin, with Tiiu Parmas.
His best performance in the singles draw of a Grand Slam tournament came at the 1965 French Championships, where he made the quarter-finals. He was due to face South African player Cliff Drysdale in the quarter-final but the Soviet delegation made him forfeit the match, in protest against apartheid. Leius and Winnie Shaw were mixed doubles runners-up at the 1971 French Open.
On 13 May 1974, Toomas Leius strangled his wife Ene Leius (née Visnapuu) to death after finding her in bed with another man. He was sentenced to eight years in prison and was released after serving five years for good behavior.  
Grand Slam finals
Mixed doubles: 1 (0–1)
|Outcome||No.||Year||Tournament||Partner||Opponents in the final||Score in the final|
|Runner-up||1.||1971||French Open||Winnie Shaw|| Françoise Dürr
- Estonian Sportspersonality of the year: 1961, 1963, 1965
- ATP World Tour: Thomas Lejus
- ITF Tennis: Tom Leius
- Tennis Archives: Toomas Karlovich Lejus
- Davis Cup: Tomas Leius
- Brown, Cameron (2005). Wimbledon Facts, Figures & Fun. AAPPL.
- Gennady Fyodorov (23 September 1997). "Former Soviet Soccer Star Arrested for Killing Woman". The Moscow Times.
- Taki's Magazine - "Choose Pushkin" - May 30, 2007
- Fed Cup - Tie details - 2000 - Estonia v Madagascar