This Saturday (27), Ryan Bader enters action at Bellator 273 to defend his heavyweight belt against Valentin Moldavsky.

Let's remember other cases of fighters, who, like Bader, had to leave the UFC to become champions in Bellator.

Ryan Bader fought in the UFC for eight years, but never challenged for the title.

At Bellator, the fighter won not one, but two belts, becoming light heavyweight and heavyweight champion.

Just like Bader, Phil Davis also hit the post to fight for the UFC belt.

At Bellator, Mr. Wonderful became light heavyweight champion until he was dethroned by Ryan Bader.

The Armenian-Dutch arrived in the UFC as a former Strikeforce and DREAM champion and became Bellator champion after leaving Ultimate.

Gegard Mousasi is one of the rare cases of fighters who were champions before and after the UFC, but did not repeat their success inside the octagon.

The Canadian, however, only became champion three years later, at Bellator.

Rory MacDonald even challenged for the UFC belt, in one of the greatest wars in the organization's history, against Robbie Lawler

Away from the UFC, the Japanese became bantamweight champion at Rizin and Bellator and established himself as one of the best in the world in the division.

One of the flyweight pioneers in the UFC, Kyoji Horiguchi also challenged for the organization's belt, but was no match for Demetrious Johnson.

Best known for being Anthony's brother, Sergio Pettis fought for six years in the UFC, without much prominence.

The athlete's shining moment came two years after his departure from Ultimate, when he knocked out Horiguchi to win the Bellator bantamweight belt.

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