Daniels, nicknamed "The Squirrel", turned pro in 1988 and in 1992 landed a shot at the WBC Light Middleweight Title against Terry Norris. Norris won via TKO. In 1995, he fought Julio César Green for the Vacant WBA Light Middleweight Title and won a decision. In his first defense, he lost the title to Julio César Vásquez via 11th round TKO. Daniels was leading on the scorecards until the knockout happened; it ranked as Ring Magazine's Knockout Of The Year. In 1997 he got a chance to reclaim the belt against Laurent Boudouani, but lost a decision. It wasn't until 2002 that he got a shot at another major belt, taking on Bernard Hopkins and losing in a 10th round TKO. As of 2008, Daniels continues to fight after 18 years as a pro.
| WBA Light Middleweight Champion
16 Jun 1995– 16 Dec 1995
Julio Cesar Vasquez