By Keith Idec

Charles Conwell continued the impressive start to his pro career Friday night.

The 20-year-old super welterweight prospect went the distance for the first time in six pro bouts, but floored Roque Zapata three times on his way to an easy unanimous-decision win in their six-round bout (60-51, 60-51, 60-53). Cleveland’s Conwell, a 2016 Olympian, improved to 6-0 in the opener of a four-fight “ShoBox” broadcast from the Masonic Temple & Performing Arts Center in Cleveland.

Panama’s Zapata, 22, dropped to 4-2-3.

Conwell drilled Zapata with a left hook to the body that sent Zapata to one knee with 2:19 to go in the fifth round. Zapata reached his feet following the third knockdown of the bout, but Conwell hit him with body and head shots for the remainder of the round.

A left hook to the body by Conwell hurt Zapata just before the bell sounded to end the fourth round. Zapata also suffered a cut over his left eye in the fourth round.

Conwell connected with a short right uppercut that dropped Zapata with 2:27 to go in the third round. Zapata came dangerously close to not getting up in time, but beat referee George Nichols’ count just in time.

Conwell’s left hook to the body, followed by a left hook to the head dumped Zapata to his gloves and knees with about 1:15 left in the third. Zapata got up again, tried to fight out of the trouble and survived until the end of the round.

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.