Roberto Marroquin moves to 18-0

Updated: January 22, 2011, 11:23 PM ET
ESPNDallas.com

LAS VEGAS -- Dallas featherweight Roberto Marroquin improved to 18-0 with a fourth-round technical knockout of Mexico's Eduardo Arcos.

Marroquin was effective with his left hook, using it to drop Arcos -- a last-minute replacement for Leon Bobo -- twice in the fourth. The fight was called at 1:21, giving Marroquin his 14th professional knockout victory.

Another Dallas native on the card, junior welterweight Fernando Rodriguez, lost a decision to Jose Benavidez. Rodriguez moves to 5-2, while Benavidez improves to 10-0.

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