With the victory on the Stephanie Han-Holly Holm undercard, Serrano (49-4-1, 32 KOs) retained her WBA and WBO featherweight titles.

Serrano had a 29-6 in power punches, throwing 53. Hanson only landed 6 of 40 for 15%.

Serrano pinned her the corner and overwhelmed Hanson (17-3, 13 KOs) high and low, folding her with body shots to force the stoppage by referee Robert Hoyle.

It was the first time Hanson was stopped inside the distance.

Although Holly Holm threw and landed more than Stephanie Han (13-0, 3 KOs), who was fighting in her hometown of El Paso in the main event, it wasn't enough.

Holm (34-4-3, 9 KOs) threw 437 punches and landed 107 (24%) compared to 70 of 358 for Han (20%). She still lost by majority decision in the WBA lightweight title bout by scores of 96-94 twice and 95-95.

In January, Holm was cut by an accidental head butt and lost to Han (13-0, 3 KOs) by technical decision after seven rounds.

Lulu Juarez retained her WBC junior flyweight title on Saturday, scoring a split decision against Yokasta Valle at County Coliseum in El Paso, Texas.

Two judges scored for Juarez, 95-94 and 98-91, while another sided with Valle 95-94.

It was a competitive bout on a card headlined by Stephanie Han-Holly Holm.

Juarez (40-4, 5 KOs) dew blood from her nose midway through the ninth round, and an accidental clash of heads left a nasty gash aside Valle’s left eye in the 10th with 1:05 left.

The decisive moment soon followed. Valle landed a clean left hook at the end of a combination and pressed the issue thinking she had Juarez hurt. Juarez, however, landed a flurry of and dropped her in the waning seconds for a knockdown.

Valle (34-4, 10 KOs) complained it wasn’t clean, but replays showed that was the correct call.