The arresting officer caught on surveillance video tackling former tennis pro James Blake in a wrongful arrest had not yet received retraining, Mayor Bill de Blasio said Tuesday.

The mayor told CNN on Tuesday morning that officer James Frascatore was one of thousands of officers who have not yet been through a new training program.

RELATED: James Blake meets with Mayor de Blasio after wrongful arrest 

"This particular unit had not yet been trained," de Blasio said. "But everyone will be ultimately."

The retraining, focused on officers' use of force, was announced in response to criticism over the death of Staten Island man Eric Garner after he was placed in an alleged chokehold by a cop.

RELATED: NYC officials renew calls to fire James Blake's arresting officer 

"Let me tell you," the mayor added, "this will make a world of difference to help the officers understand how to do their job effectively but use the least force in each situation."

Videotape shows Frascatore take down Blake, who police officials affirm did not resist despite the officer's aggressive arrest.

De Blasio met with Blake at City Hall on Monday afternoon for about an hour, along with NYPD Commissioner Bill Bratton.

Blake previously called on Frascatore to be fired and said he would pursue conversations with City Hall to bring attention to community policing issues.

"What [de Blasio] said that made me feel good was that in his heart he was on the same page as us," Blake told reporters outside City Hall.

Frascatore was reassigned to desk duty almost immediately after news of Blake's arrest came out as the NYPD continues to investigate the case.