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From BR Bullpen
The cycle is a relatively rare feat. To accomplish a cycle, a player must get a single, double, triple, and home run in a game. A four hit game is rare enough, but to include each of the four hits is a significant feat. In fact, it is on par with a no-hitter in rarity.
A "natural cycle" is hitting a single, double, triple and home run in order in a game.