Tonight at 9 p.m. EDT, HBO pay-per-view presents a four-fight card headlined by the oldest world champion in boxing history, as 46-year-old Bernard Hopkins (52-5-2, 32 KO) defends against Chad Dawson (30-1, 17 KO) in the main event.

Also on the card, Jorge Linares (31-1, 20 KO) meets Antonio DeMarco (25-2-1, 18 KO) for the vacant WBC lightweight title. The hyper-talented Linares, 26, is still looking to get his career back on track after his shocking TKO-1 loss in 2009 to Juan Carlos Salgado, while DeMarco is generally an exciting and gutsy fighter.

In a 12-round junior welterweight fight, Kendall Holt (27-4, 15 KO) steps back onto the major stage against Golden Boy prospect Danny Garcia (21-0, 14 KO). Garcia is a 23-year-old prospect taking a step up in class, at least if the erratic Holt, 30, brings his A-game to the contest.

In the pay-per-view opener, popular veteran Paulie Malignaggi (29-4, 6 KO) faces Orlando Lora (28-1-1, 19 KO) in a 10-round welterweight bout. Malignaggi is hoping to land a title shot at the new weight in 2012.

Andrew Fruman will be handling tonight's round-by-round action and post-fight analysis.