Julio Cesar Chavez Jr. found perhaps his most difficult opponent up to that point when he met Sheldon Mosley at the Poliforo Juan Gabriel in Ciudad Juarez. Mosley, of Oklahoma City, Oklahoma, demonstrated his skill as a boxer and that he knew how to use the ring. Although Julio completely outclassed Mosley in offence, it took him five rounds before he could finally do enough damage to stop his opponent with the official time coming at 1:56 of the fifth.

Round One – Mosley aggressive to start, backs Junior to ropes. Junior counters with left hooks. Mosley jabs and moves. He throws a pawing jab as Junior lands rights and hooks to Mosley’s body when he is near the ropes. Though Mosley will throw and land an occasional right, it is ineffective, and Junior’s more effective punching wins him the round.

Round Two – Junior starts with a left hook that staggers Mosley, who starts to throw more. Mosley is trying to make it competitive but seems to lack the firepower; when Junior throws his combos, they move Mosley. The body punches especially seem to hurt him, which Junior is throwing and landing just like his father used to. At this point in the round, Mosley looks only to survive it.

Round Three – Junior is defending himself better, as Mosley’s combos are landing on gloves and forearms. Mosley is starting to come in with his head, which draws a warning from the referee. Mosley is also starting to tie up Junior on the ropes, which is only “mostly” effective, as Junior is able to punch his way out. Mosley’s “headwork” draws another warning from the ref, though it’s not really anything serious.

Round Four – Mosley looks to put a little more behind his punches to start, but that steam is taken out of him rather quickly due to Junior’s still more effective counters. Mosley lands his best punch thus far, a right to the body, but it does little to stop any of Junior’s momentum. Junior lands another body-head combo that staggers Mosley. That’s really the only major action in this round as Mosley spends most of it clinching.

Round Five – This round Junior starts out agressive, backing Mosley to the ropes. Mosley is very tired by this point, but his survival tactics are still making Junior work hard. Junior is also looking a bit winded, likely from getting leaned on by Mosley, who is starting to simply throw his hands just to keep Junior away. But Junior throws back and punches Mosley halfway through the ropes, prompting referee Caballero’s stoppage at 1:56 of the round. Junior ups his record to 13-0 (8).

Also on the card, Mauro Lucero stopped Eduardo Gomez in round one to win the vacant WBC Continental Americas welterweight title. Carlos “Bolillo” Gonzalez won a ten-round split decision over Saul Duran (welterweights).
notes

Promoter: Víctor Zavalza
Ring Announcer: Iván Madrid

Julio Cesar Chavez Jr. was fighting before a sold out crowd when he met Mike Walker (5-5-0) at the Desert Diamond Casino in Tuscon, Arizona. And the wild crowd got exactly wanted when Julio knocked Walker three times in the first round en route to a TKO just two minutes twenty-one seconds into the fight. In the short while the fight lasted, Chavez Jr. was able to get in a variety of punches, the first knockdown coming from a hard right, the second from a body shot and the last from a brutal uppercut. The fight was finally stopped by referee Robert Ferrara in accordance with the three-knockdown rule in effect, and Chavez Jr. upped his record to 12-0.

Also on the card, local middleweight Omar Candelaria won an unanimous decision over Gustavo Medina.
notes

Referee: Robert Ferrara
Judge: Joe Garcia
Judge: Gonzalo Valenzuela
Judge: Gerald Maltz
Promoter: Fernando Beltran (Top Rank)
Physician: Joel Moncivaiz
Physician: Steven Wallach
Attendance: 2,525
Tickets: $25 to $100

Galindo’s nose was already bloodied in the third round when Chavez Jr. knocked him down. In the fourth, Chavez continued to batter his opponent until Galindo was forced under the top rope and the referee stopped the bout, giving him the TKO win.

In the main event, Jorge “Travieso” Arce won an unanimous decision over Juanito Rubillar to retain his WBC light flyweight title. Also on the card, Eric Ortiz won a technical decision over Wyndel Janiola in an IBF light flyweight title eliminator bout. Jose Luis Zertuche knocked out Rito Ruvalcaba in one for the Fedebol Middleweight Title. Flyweight Francisco Arce knocked out Carlos Banuelos in two.
notes

Promoter: Promociones Zanfer

For his tenth professional fight and the last of the trial period given to him by his father, Julio Cesar Chavez Jr. was back in Las Vegas, Nevada, for the second time, at the MGM Grand Garden Arena. Despite the unimpressive physique of Jason Smith, however, he turned out to be a tough opponent. Smith hung in for the four scheduled rounds–Chavez’s last fight to go the distance before going on a thirteen-fight knockout streak.

In the first round of the fight, most of Smith’s punches landed only on the gloves or arms of Chavez, but the round was almost half over before Chavez landed his first flush right. Smith clinched a few times this round and was twice warned by the referee for rabbit punches in the clinch. Chavez finally got in a couple of good hooks to the body in the last minute of the round in addition to his head shots.

In the second round, Smith again was landing on Chavez’s arms and gloves, but managed to get in a few minor punches. Chavez was getting in some better punches, although he was also throwing a number of very wide punches that missed their mark. In the second half of the round, a few of his quick jabs knocked back the head of his opponent, and just before the bell he was able to follow up one of the jabs with a perfect right that hurt Smith. Unfortunately, the round was over before he could do any more damage.

In round three, Chavez started the round with his hard jab that had been so effective the last round, targeting Smith’s bloodied nose. The crowd woke up towards the middle of the round, when Chavez started landing more to the body as well, but he had some trouble with Smith clinching and couldn’t get in as many punches as he wanted.

In the final round, Chavez was a bit more aggressive, following his opponent around the ring and landing to the head and body. However, he wasn’t doing anything while in Smith’s clinches, which were more frequent now, or while Smith was pressing him against the ropes. In the final seconds of the fight, Chavez landed a strong series of punches, but Smith clinched and the bell rang. The fighters embraced, and Chavez went home with his tenth professional win.

In the main event, Erik Morales won an unanimous decision over Carlos “Famoso” Hernandez for the WBC and IBF super featherweight titles. Also on the card, Ivan Calderon retained his WBO minimumweight title with an unanimous decision over Roberto Carlos Leyva. Bantamweight Rafael Marquez knocked out Heriberto Ruiz in three. Lightweight Robbie Peden won an unanimous decision over Armando Cordoba. Lightweight Almazbek Raiymkulov TKO’ed Ricardo Fuentes in one.
notes

Referee: Jay Nady
Judge: Bill Graham 40-36
Judge: C.J. Ross 40-36
Judge: Adalaide Byrd 40-36

Julio Cesar Chavez Jr. was back in his hometown of Culiacan, Sinaloa, at the Parque Revolucion for another exhibition of his boxing skill in June of 2004. Julio proved to be too much for opponent Jose Luis Huerta, and the referee stopped the fight 52 seconds into the second round.

Also on the card, Ernesto Zepeda knocked out Hector Mancina in the ninth round for the WBC Continental Americas lightweight title. Rolando Juarez won a four-round decision over Jair Aguilar. Heavyweight Damián Norris TKO’ed Luis Garcia in three.
notes

Attendance: 2,300

In May 2004, Julio Cesar Chavez Jr. was for the second time featured on one of his father’s farewell fights. The card entitled “Adiós a México” was also a quick hello by Julio–very quick, as it took only one minute and ten seconds for him to score the TKO win over Antonio Aguilar.

Aguilar showed some head movement and a reasonable jab, but Junior showed his physical superiority with jabs and feints of his own. Aguilar managed to land some small hooks, but Junior forced Aguilar to retreat by countering with one-twos, one of which was followed by a left hook that put Aguilar down. Aguilar was up at about two and took the mandatory 8-count. Junior followed up with jabs and left hooks. He seemed to be foregoing any bodywork in this fight. That became irrelevant when, after Aguilar attempted a couple of wide hooks, Junior landed an left hook followed by a devastating right cross that dropped Aguilar. Referee Gabrial Peralta immediately called a stop to the fight at just 1:10 into the first round.

In the main event, Julio Cesar Chavez Sr. squared off against Frankie Randall, the man who first knocked him down and got a win over him in the ring over ten years earlier. Chavez scored the unanimous decision in his Mexico farewell fight. Also on the card, Miguel Angel Gonzalez scored a tenth-round TKO over Ernesto Carmona. Marco Antonio Rubio TKO’ed Fitz Vanderpool in one to retain his WBC International light middleweight title. Genaro Garcia won an eighth-round TKO over Adonis Rivas to retain his WBC Fecarbox bantamweight title. Light welterweight Ernesto Zepeda also won an eighth-round TKO over Oscar Tinajero. Younger brother Omar Chavez, 13, also fought a two-round amateur exhibition bout on the card.
notes

Referee: Gabriel Peralta
Ring Announcer: Jimmy Lennon, Jr.
Commentator: Col. Bob Sheridan

For his seventh consecutive win, Julio Cesar Chavez Jr. made an appearance on the undercard of another popular Mexican fighter Jorge “Travieso” Arce at the Palenque de Gallos in Tuxtla Gutierrez, Chiapas. Chavez Jr. dominated the first round, and the fight was waved off at just forty-two seconds into the second when a solid one-two dropped Ocampo to the canvas.

In the main event of the evening, Jorge “Travieso” Arce knocked out Melchor Cobb Castro in the fifth round of their rematch to retain the WBC light flyweight title. Also on the card, Ricardo Castillo won the vacant Mexican super bantamweight title with a majority decision over Rubén Estanislao. Antonio Meza won a tenth-round TKO over Andres Cabrera for the WBC Fecarbox super bantamweight title.
notes

Promoter: Fernando Beltran (Zanfer)

After winning only one of his first five fights by knockout, Julio Cesar Chavez Jr. got back on track with a first-round knockout of Guadalupe Arce. In their fight at the Auditorio Municipal in Tijuana, Arce was knocked down three times before referee Juan José Ramírez called a stop to the bout at two minutes ten seconds in the first round.

Arce, of Los Mochis, Sinaloa, has since had a couple of shots at the WBA Continental Americas super featherweight title, as well as a shot at at top prospect Luis Maldonado, but came out of those bouts unsuccessfully.

In the main event of the evening, Diego Morales won an unanimous decision over Adonis Rivas in a WBC bantamweight title eliminator bout. Also on the card, Luis Valdez won by fourth round TKO after Eric Ortiz could not continue due to cuts over both eyes caused by unintentional headbutts. Damián Norris knocked out Jacinto Diaz in two. Ricardo Dominguez won a four-round decision over Jose Luis Manriquez.
notes

Referee: Juan José Ramírez

Julio Cesar Chavez made his Las Vegas debut at the MGM Grand on the untelevised undercard of Morales-Chavez. His opponent for the evening was the tough Irishman Oisin Fagan (5-1), who gave him what was for a long time considered his most difficult fight. Though Chavez scored a knockdown in the third round with a hard right, Fagan was coming at him the whole time with punches. At the end of four rounds, Julio won by an unanimous decision.

Oisin Fagan of Dublin, Ireland, and fighting out of Oklahoma City, Oklahoma, had only one previous loss. Fagan also had two wins over another Chavez opponent, Sheldon Mosley–a fourth-round TKO and a four-round decision. Later in the year after losing to Chavez, Fagan won the vacant Oklahoma state lightweight title with a decision over Lee Cargle. A rematch between Fagan and Chavez was a possibility but never materialized. His current record is 10-3 (6).

In the main event of the evening, Erik Morales won the WBC super featherweight title with an unanimous decision over Jesus Chavez. Julio Cesar Chavez Sr. was on hand to congratulate him as the second Mexican to win major titles in three weight divisions. Also on the card, Miguel Cotto won a fourth-round TKO over Victoriano Sosa to retain his WBC International light welterweight title. Emanuel Augustus fought to an eight-round majority draw with Alvaro Aguilar.
notes

Referee: Tony Weeks
Judge: Patricia Jarman 39-36
Judge: Dalby Shirley 39-36
Judge: Bill Graham 39-37
Promoter: Top Rank

Julio Cesar Chavez Jr. won his fourth professional victory with an unanimous decision over Jose Luis Burgos at the International Arena in Houston, Texas.

Also on the card, Mauro Lucero knocked out Jose Luis Baltazar in one (light middleweight). Trini Guzmán won a mixed decision over Morgan McCarly (super middleweight). Ricardo Dominguez TKO’ed Martin Quiroz in the third (light welterweight). Lee DeLeón TKO’ed Gerardo Peñaflor in three (welterweight).
notes

Referee: Ronnie Ralson
Judge: David Robertson 40-36
Judge: Lee McCowan 40-36
Judge: Randy Russell 40-36
Promoter: OSF Promotions
Physician: Jose Guerrero
Physician: Ignacio Alpizar