On December 22, 2018, a 29-year-old Ulises Sierra (13-0-2, 8 KOs) and Ivan Mendez Raya met in the ring.
Sierra came in to the fight on a 6-fight win streak with a 53% KO rate, and was fighting after a gap of 2 months and 16 days.
Ulises Sierra stopped Ivan Mendez Raya via KO in the 1st round. Sierra improves his record to 14-0-2 (9 KOs)
On July 16, 2016, a 27-year-old Ulises Sierra (9-0-2, 5 KOs) and Jose Hernandez met in the ring.
Sierra came in to the fight on a 2-fight win streak with a 45% KO rate, and was fighting after a gap of 10 months and 19 days.
Ulises Sierra stopped Jose Hernandez via KO in the 1st round. Sierra improves his record to 10-0-2 (6 KOs)
On October 6, 2018, a 29-year-old Ulises Sierra (12-0-2, 7 KOs) and Daniel Yocupicio Mendez met in the ring.
Sierra came in to the fight on a 5-fight win streak with a 50% KO rate, and was fighting after a gap of 10 months and 19 days.
Ulises Sierra stopped Daniel Yocupicio Mendez via KO in the 2nd round. Sierra improves his record to 13-0-2 (8 KOs)
On May 15, 2014, a 25-year-old Ulises Sierra (5-0-1, 4 KOs) and Ruben Porras met in the ring.
Sierra came in to the fight on a 4-fight win streak with a 66% KO rate, and was fighting after a gap of 2 months and 17 days.
Ulises Sierra stopped Ruben Porras via TKO in the 2nd round. Sierra improves his record to 6-0-1 (5 KOs)
On March 29, 2013, a 24-year-old Ulises Sierra (1-0-1, 0 KOs) and Jose Luis Esparza met in the ring.
Sierra came in to the fight after a draw in his last fight with a 0% KO rate, and was fighting after a gap of 4 months and 26 days.
Ulises Sierra stopped Jose Luis Esparza via TKO in the 2nd round. Sierra improves his record to 2-0-1 (1 KO)
On April 27, 2019, a 30-year-old Ulises Sierra (14-0-2, 9 KOs) and Fidel Hernandez met in the ring in a super-middleweight bout.
Sierra came in to the fight on a 7-fight win streak with a 56% KO rate, and was fighting after a gap of 4 months and 5 days.
Ulises Sierra defeated Fidel Hernandez via unanimous decision in the 10-round super-middleweight fight. Sierra improves his record to 15-0-2
On July 30, 2021, a 32-year-old Ulises Sierra (15-2-2, 9 KOs) and Carlos Bacasegua Luzania met in the ring.
Sierra came in to the fight on a 2-fight losing streak with a 47% KO rate, and was fighting after a gap of 7 months and 18 days.
Ulises Sierra stopped Carlos Bacasegua Luzania via TKO in the 4th round. Sierra improves his record to 16-2-2 (10 KOs)
On February 28, 2014, a 25-year-old Ulises Sierra (4-0-1, 3 KOs) and Loren Myers met in the ring.
Sierra came in to the fight on a 3-fight win streak with a 60% KO rate, and was fighting after a gap of 5 months and 7 days.
Ulises Sierra stopped Loren Myers via TKO in the 3rd round. Sierra improves his record to 5-0-1 (4 KOs)
On September 21, 2013, a 24-year-old Ulises Sierra (3-0-1, 2 KOs) and Alec Christenberry met in the ring.
Sierra came in to the fight on a 2-fight win streak with a 50% KO rate, and was fighting after a gap of 3 months.
Ulises Sierra stopped Alec Christenberry via TKO in the 3rd round. Sierra improves his record to 4-0-1 (3 KOs)
On October 13, 2017, a 28-year-old Ulises Sierra (10-0-2, 6 KOs) and Christian Solorzano met in the ring.
Sierra came in to the fight on a 3-fight win streak with a 50% KO rate, and was fighting after a gap of 1 year, 2 months, and 27 days.
Ulises Sierra stopped Christian Solorzano via RTD in the 5th round. Sierra improves his record to 11-0-2 (7 KOs)