On May 26, 2012, a 42-year-old Rosendo Alvarez (37-3-2, 24 KOs) and Jean Sampson met in the ring.
Alvarez came in to the fight on a 1-fight losing streak with a 57% KO rate, and was fighting after a gap of 6 years, 1 month, and 18 days.
Rosendo Alvarez lost to Jean Sampson via disqualification in the 8-round fight, and adds an loss to his record at 37-4-2.
On April 8, 2006, a 35-year-old Rosendo Alvarez (37-2-2, 24 KOs) and a 26-year-old Mexican boxer Jorge Arce (43-3-1, 33 KOs) met in the ring in a flyweight bout.
Alvarez came in to the fight on a 5-fight win streak with a 58% KO rate, and was fighting after a gap of 2 months and 4 days. Arce was on a 23-fight win streak with a 70% KO rate, and fighting after a layoff of 2 months and 11 days.
Jorge Arce stopped Rosendo Álvarez via TKO in the 6th round. Arce improves his record to 44-3-1 (34 KOs), while Alvarez adds a loss to his record at 37-3-2.
On August 12, 2000, 30-year-old Rosendo Alvarez (27-1-1, 18 KOs) and Beibis Mendoza fought for the vacant WBA light-flyweight title.
Alvarez came in to the fight on a 3-fight win streak with a 62% KO rate, and was fighting after a gap of 5 months and 1 day.
Rosendo Alvarez was defending his light-flyweight titles and, fighting for the light-flyweight WBA titles against Beibis Mendoza and lost via disqualification in the 12-round light-flyweight fight, and adds an loss to his record at 27-2-1.
On November 13, 1998, Rosendo Alvarez and Ricardo López met again in an immediate rematch.
Alvarez came in to the fight after a draw in his last fight with a 68% KO rate, and was fighting after a gap of 8 months and 6 days. López was on a 0-fight win streak with a 75% KO rate, and fighting after a layoff of 8 months and 6 days.
Ricardo López defeated Rosendo Álvarez via split decision in the rematch and successfully defended his WBC strawweight title. López improves his record to 48-0-1, while Alvarez adds a loss to his record at 24-1-1.