Trainer Bob Baffert took home his third El Camino Real Derby trophy when the lightly-raced Blackadder blitzed by slow-starting Mackinnon in deep stretch to win by a neck. The second choice was Blackadder, one of many talented 3-year-olds Hall of Famer Baffert has secured in his arsenal. Blackadder, owned in partnership by SF Racing, Starlight Racing, Madaket Stables, Robert Masterson, Stonestreet Stables, Jay Schoenfarber, Waves Edge Capital, Catherine Donovan, Golconda Stable, and Siena Farm, stepped up to stakes company after landing an off-the-turf maiden special weight contest in his third career start at Santa Anita Park Dec. 26…