Photos: Shawn Porter, Andre Berto - Open Workouts in Brooklyn

BROOKLYN - Former welterweight world champions Andre Berto and Shawn Porter began fight week activities Wednesday as they hosted a media workout at the famed Gleason's Gym in Brooklyn in advance of their world title eliminator showdown that headlines SHOWTIME CHAMPIONSHIP BOXING, presented by Premier Boxing Champions, this Saturday, April 22 from Barclays Center, the home of BROOKLYN BOXING™.

Televised coverage on SHOWTIME begins at 9:30 p.m. ET/6:30 p.m. PT and features super welterweight world champion Jermell Charlo, who was in attendance at Wednesday's workout,defending his belt against top rated challenger Charles Hatley.

SHOWTIME EXTREME action begins at 7:30 p.m. ET/PT as four-time world champion Amanda Serrano looks to become the first female fighter and first Puerto Rican to win titles in five weight classes when she fights Dahiana Santana for a vacant 118-pound title.

Tickets for the live event, which is promoted by DiBella Entertainment, start at $50 (not including applicable fees) and are on sale now. Tickets can be purchased online by visiting www.ticketmaster.com, www.barclayscenter.com or by calling 1-800-745-3000. Tickets are also available at the American Express Box Office at Barclays Center. Group discounts are available by calling 844-BKLYN-GP.

Rounding out the group of fights participating in Wednesday's workout were undefeated local prospects Julian Sosa and Richardson Hitchins, who will compete in separate bouts on Saturday night.

Here is what the fighters had to say Wednesday from Gleason's Gym:

ANDRE BERTO

"This is what we work hard to get to. All the weeks that we put into training camp have been tremendous. As athletes, we spend a lot of time trying to fine tune our craft for a reason. We're looking to see the harvest on Saturday night.

"I really had a tremendous training camp. I tried to stay away from everything else as much as I can. I'm dialed-in right now.

"You're always going to have people with you and against you in this sport. Our job is to work hard and do the best we can in the ring and give the fans a great show.

"My focus right now is on this fight night on Saturday. Everything that comes after it will take care of itself. I just have to make sure all my energy is used towards getting this win.

"There are a lot of great world champions out in camp with me and we all work hard and feed off of each other.

"I've been ready waiting for the call for a big fight and this came together and I couldn't be happier. It's going to be a great night.

"I took a little bit from his fight with Keith [Thurman]. We've seen the tape and we'll try to use it logically. We're focused and ready to go to work."