The Ravens didn't indicate whether Suggs will be able to play this fall, or if it was a full tear or partial tear.
"Terrell had a successful surgical procedure done on his Achilles tendon this afternoon by Dr. Bob Anderson," general manager Ozzie Newsome said in a statement. "After some recovery time, Sizzle' will begin the process of rehabbing the area. We know he will work hard to get back on the field with his teammates as soon as the doctors and trainers allow. We're confident that he can make a full recovery."
Suggs suffered the injury in a conditioning workout in Arizona during the NFL draft. Suggs has said that he expects to return later in the season.
Suggs had a career-high 14 sacks and seven forced fumbles last season.
In his first season in Baltimore last year, Pollard had 75 tackles, two sacks, three forced fumbles and one interception.
"Bernard showed last year that he is a Raven," Newsome said. "He's smart, tough and brings a passion to the games, our practices and in the weight room. His physical presence on the back end is very important to the way we play defense. He has indicated since the first day he stepped into our building last training camp that he wanted to be a Raven for the long haul."