|Full name||Thomas Stachewicz|
|Born||5 December 1965|
|Height||1.84 m (6 ft 0 in)|
|Weight||79 kg (174 lb)|
Stachewicz made his Olympic debut in the 1984 Summer Olympics in Los Angeles, where he competed in the heats of the Men's 4×200-metre freestyle relay. The Australian 4×200-metre relay team recorded national records in both the preliminaries and final, finishing with a time of 7 minutes 25.63 seconds, 0.85 of a second behind third place Great Britain. Stachewicz swam the preliminary only at this meet.
At the 1986 Commonwealth Games in Edinburgh, Stachewicz was part of the gold-medal-winning men's 4×200-metre freestyle relay team. He also won bronze in the men's 200-metre freestyle.
Later that year he competed in the 1986 World Swimming Championships in Madrid, where he was part of the 4×200-metre freestyle relay team that finished fourth.
In 1987 Stachewicz broke the Commonwealth record in the 200-metre freestyle at the NOK[clarification needed] International Championship in East Berlin in a time of 1 minute 49.32 seconds being the first Australian to break the 1 minute 50 second mark.
At 1988 Summer Olympics in Seoul, Stachewicz swam well below his best in the men's 200-metre freestyle heats, qualifying only for the B Final, where he finished 3rd in 1 minute 50.83 seconds. He also competed in the men's 50-metre and 100-metre freestyle events, winning the B Final in the 100-metre freestyle in 50.71 seconds. He led off the relay in the final of the 4×200-metre freestyle relay, recording a personal best of 1 minute 48.99 seconds. This time ranked him second all-time Australian in the 200-metre freestyle behind Duncan Armstrong's world record from earlier in the meet. The Australian team went on to record a national record of 7 minutes 15.23 seconds for their fourth place, 0.88 of a second behind the West German team in the bronze medal position.
At the 1990 Commonwealth Games in Auckland, New Zealand, Stachewicz was a member of the gold-medal-winning men's 4×100-metre freestyle relay and 4×200-metre freestyle relay teams. He was also a member of the bronze-medal-winning 4×100-metre medley relay team and won an individual bronze in the men's 200-metre freestyle final in a time of 1 minute 49.98 seconds.
In 1991 he competed at the World Swimming Championships in Perth, where he came seventh in the men's 100-metre backstroke.
Stachewicz then competed in the 4×100-metre freestyle and 4×100-metre medley relays at the 1992 Summer Olympics in Barcelona, where the team finished 7th and 8th respectively. He also competed in the men's 100-metre backstroke, finishing 4th in his heat with a time of 57.03 seconds.
In 2009 he was inducted into the Swimming Western Australia Hall of Fame.