Jonathan Gonzalez injures shoulder

Middleweight Jonathan Gonzalez injured his left shoulder in a sparring session on Saturday and was forced to withdraw from his upcoming fight with Norberto Gonzalez -- no relation -- Warriors Boxing promoter Leon Margules told ESPN.com on Monday.

The fight was scheduled to headline an ESPN2 "Friday Night Fights" card on Feb. 7 in Chicago. This marks the fifth consecutive card this season that there has been a major pullout, including four in the main event.

Later Monday, Margules announced that Roberto Garcia (33-3, 22 KOs), 33, of Weslaco, Texas, had agreed to take Gonzalez's place.

Jonathan Gonzalez (17-0-1, 14 KOs), a 24-year-old from Puerto Rico, who was training for the fight Miami, Fla., was sparring with unbeaten light heavyweight Radivoje Kalajdzic (13-0, 9 KOs) when he injured the shoulder.

"On Sunday, his strength coach called me and said that he couldn't even lift up his arm," Margules said.

Margules said Gonzalez had an MRI exam on Monday, which indicated a pulled muscle. Regardless of the outcome of the exam, Margules said Gonzalez would not have been able to fight since he would miss too much training time while also still having to take off weight to make the 158-pound contract limit for the bout.

Margules had offers out to various possible replacement opponents to face Norberto Gonzalez (20-2, 13 KOs), 32, of Mexico.

Garcia has won five fights in a row since a decision loss to former welterweight titlist Antonio Margarito in May 2010.

The other opponent Margules made an offer to was John Jackson (18-1, 15 KOs), 25, of the U.S. Virgin Islands. Jackson, one of the fighting sons of former world champion Julian Jackson, has won five consecutive fights since dropping a decision to Willie Nelson in September 2012 on the Sergio Martinez-Julio Cesar Chavez Jr. undercard.