HOUSTON  — After a 3 1/2-year absence from the UFC, Chan Sung Jung looked like he never left.

The South Korean featherweight, who left the UFC in 2014 to serve his two-year mandatory military service in his home country, knocked out Dennis Bermudez in the first round at UFC Fight Night 104 Saturday night.

Jung delivered a right uppercut that knocked Bermudez to the ground before delivering multiple right hands that forced referee Herb Dean to stop the fight at 2:49 of the first round.

Bermudez delivered the most effective blows early in the first round, stunning Jung temporarily.

Bermudez entered the bout having won two straight fights and was ranked No. 9 by the UFC in the featherweight division.

Jung is now 4-1 in the UFC, with his only loss coming to featherweight champion Jose Aldo in his last fight before his spell in the military on Aug. 3, 2013. Overall, Jung is 14-4 as a professional.

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In the co-main event, the previously unbeaten Alexa Grasso lost to veteran Felice Herrig by unanimous decision in a women's strawweight fight. Herrig won her second straight fight.

This was just Herrig's third fight since the start of 2015, with her last coming July 23. She said scheduling conflicts made her wait six months for this fight, and she told reporters on Thursday during her pre-fight workout that she hopes for a shorter spell before returning to action.

Texas' James Vick picked up a lightweight win over Abel Trujillo. The Fort Worth native won via submission in the third round with a choke hold. He improved to 10-1 overall and made a request in the octagon to get his next fight in Texas, as well, during the UFC's event in Dallas on May 13.