Cosmopolitan, Las Vegas - In an IBF bantamweight world title eliminator, Vincent Astrolabio (18-3, 13 KOs) scored three knockdowns to put away Nikolai Potapov (23-3-1, 11 KOs) in the sixth round. (photos by Esther Lin)

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The first round was close, but the difference came in the final minute when Astrolabio connected with a counter hook to score a flash knockdown on Potapov.

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It was close action in the second and third, with Potapov doing better work and landing counters. But Astrolabio was connecting as well, with heavier punches.

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Some give and take action in the fourth. Astrolabio once again showed off his power in the fifth when he dropped Potapov for a second time after landing a solid uppercut. He took control of the fight and was peppering Potapov with good shots. Potapov began to come back with solid jabs in the final minute.

At the start of the sixth, a series of big punches dropped Potapov for the full count.

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