It sounds like an oxymoron, but solo synchronized swimming was made an Olympic sport in 1984 -- and discontinued in 1992. Here, Bulgarian Kalina Yordanova competes at the 2012 European Synchronized Swimming Championships in the Netherlands.
(CNN) -- Basketball, track and swimming have been staples at the Olympics for decades, drawing thousands of spectators. But solo synchronized swimming or live pigeon shooting?
They are among the strangest events that have, at one time or another, taken place at the Games.
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Here are the 10 oddest sports that have graced the modern Olympics -- some will feature at London 2012 over the coming weeks, some thankfully will not...
SOLO SYNCHRONIZED SWIMMING
Oxymoron alert! Yes, this sport features one female swimmer synchronizing with herself. The sport made its debut in the Los Angeles Games in 1984, with U.S. swimmer Tracie Ruiz winning the gold medal.
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Similar to the group event, a swimmer performs a kind of water ballet. A lonely water ballet.
Despite the seemingly misleading title, organizers of the sport say the swimmer is actually in sync with the music.
Will we see this sport in London?
No. But there will be the team synchronized swimming events that most people are familiar with. The solo event was discontinued after 1992.
CLUB SWINGING
Club Swinging debuted in 1904. The athlete stands erect, holding clubs that resemble bowling pins in each hand. He then twirls and whirls them around. The more complicated the routine, the more points he wins.
Historians say the sport was the precursor to rhythmic gymnastic events that use ribbons and hoops.
Will we see this sport in London?
No. Sadly. Club Swinging was only in the Olympics twice, ending in 1932.
TUG-OF-WAR
Once a very competitive Olympic sport, tug of war employs teams that struggle and strain to pull a rope past a certain point. Great Britain actually won the most medals in this event, historians say.
Will we see this sport in London?
Nope. Tug-of-war was an Olympic event until 1920, and was then relegated to the church picnic circuit.
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The 1900 Olympics in Paris had the great distinction of being the first Games where women competed. It also wore the ignoble badge for this sport, where athletes aimed to bring down as many pigeons as possible.
Nearly 300 birds were slain, historians say, leaving a bloody, feathery mess. The winner shot down 21 pigeons.
Will we see this sport in London?
Yes. Just kidding. Come on now. The 1900 Games in Paris was the only time pigeon killing was featured in the Olympics.
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SWIMMING OBSTACLE COURSE
As strange as this sport may seem, the obstacles swimmers had to overcome are even more unusual. In the 1900 Games in Paris, swimmers crawled over boats, swam under them and climbed a pole -- all the while swimming 200 meters in the Seine.
Will we see this sport in London?
No. The boats on the Thames are safe.
ROLLER HOCKEY
Maybe if this was the 1970s and there was a disco ball, this sport would have taken off. Roller Hockey debuted at the 1992 Barcelona Games. The game follows the rules of ice hockey, but with roller skates. Argentina took the gold.
Will we see this sport in London?
No. The Barcelona Games was the only time Roller Hockey was in the Olympics.
LA CANNE
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Ok, think fencing. Now take away the saber and replace it with a cane. You know, the walking stick type of thing? Voila, now you have the French martial art La Canne, that debuted at the 1924 Olympics.
Will we see this sport in London?
No, but you can watch the fencing events and image how much more awesome it would be with wooden canes.
ROPE CLIMBING
Yes, the activity that made you feel like a weakling in your physical education class debuted as an Olympic sport in 1896. Just like in your gym class, climbers are timed to see how quickly they can shimmy up a braided rope.
But unlike your classmates, these athletes didn't run out of steam before reaching the top.
Will we see this sport in London?
No. After 1932, the Olympics thankfully left rope climbing behind. Kind of like you did after high school.
TRAMPOLINE
Despite seeming like an activity you did in your backyard when you were 10, trampoline debuted as an Olympic sport in 2000.
Gymnasts take to the trampoline, somersaulting and flipping as stern-faced judges keep score.
"Precise technique and perfect body control are vital for success, with judges delivering marks for difficulty, execution and time of flight, minus penalties," Olympic officials say.
Will we see this sport in London?
Yes. Both men and women trampolinists (yes, that is a word) will compete in London.
RACE WALKING
In this sport, competitors try to outrace one another -- without actually running. Huh? Even though the premise seems a little goofy, race walking has actually been an Olympic sport since 1904.
To ensure that athletes do not run, race walkers must have one foot on the ground at all times or risk disqualification. The result? A distinctive sashay that elicits many a giggle.
Will we see this sport in London?
Yes. Men will compete in 20-kilometer and 50-kilometer races; women in 20 kilometers. Ready, set, sashay!
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Tug-of-war was one of the events at the 1908 London Olympics. Here, members of the U.S. team test their strength at the stadium in White City.
Roller hockey, unlike its ice cousin, failed to capture the imagination. It appeared at just one Olympics -- Barcelona in 1992.
Live pigeon shooting only appeared once -- at the 1900 Olympics in Paris. Nearly 300 birds were slain in the bloody spectacle. Today, clay targets are standard.
At the same 1900 Olympics, obstacle course swimmers had to negotiate boats and poles. Today the River Seine is more likely to accomodate triathletes in the city's annual competition.
Before there was fencing, there was the French martial art La Canne. The sport first appeared at the 1924 Paris Olympics and much like the name suggests, involved wooden canes.
Rope climbing was dropped from the Olympics in 1932. But that hasn't stopped professional climbers still keeping the sport alive. Here, climber Marcus Bottay scales a five-meter rope bare-handed in Sydney, Australia.
Club swinging first appeared at the 1904 St. Louis Olympics and involved athletes twirling clubs. Historians believe it was the precursor to rhythmic gymnastic events that use ribbons and hoops.
Race walkers must have one foot on the ground at all times or risk disqualification. The result? A distinctive sashay.
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