In September 2010, Ruiz beat the veteran Jesús Vázquez to win the WBC Continental Americas super flyweight championship, the bout was held at the Arena Solidaridad, in Monterrey, Nuevo León, Mexico.
On January 22, 2011, Ruiz won a technical ninth-round decision over Nicaraguan Álvaro Pérez to capture the interim WBA bantamweight title.
[1] In 2016, Ruiz beat fellow countryman Julio Ceja in a rematch to win the WBC Super bantamweight title.
[4] Davis cornered Ruiz from the opening bell, and was able to crack his guard towards the end of the round and drop him with a left hook.
Ruiz made the count, but the referee decided to end the fight, awarding Davis with a first-round knockout victory.