Nikon D3S is the best professional camera and Nikkor 300mm f/2.8G ED VR II is the best professional lens according to 2010-2011 EISA awards.
Reasons for selection after the break:
"The Nikon D3S is so sensitive that it can focus and shoot in conditions in which even the human eye has difficulty seeing. Although high ISO settings are a feature of most modern D-SLR cameras, the quality achieved with D3S high ISO settings is unsurpassed in terms of low noise levels and richness of detail. Together with its extremely fast EXPEED image processing, excellent battery life and high-quality construction, the D3S is the perfect D-SLR for professional sports, action and low-light photography."
"Nikon's AF-S NIKKOR 300mm f/2.8G ED VR II gives photographers a guarantee of excellent image quality, even in the most difficult lighting conditions. The fast f/2.8 maximum aperture allows photographers to work in a wide variety of situations, offering the ability to shoot with faster shutter speeds and to have smooth backgrounds with attractive bokeh. The lens has three ED glass elements to eliminate chromatic aberration and Nikon's Nano Crystal Coat reduces internal reflection. The AF-S NIKKOR is equipped with Nikon’s VR II vibration reduction system, making it a natural choice for photographers specialising in nature, wildlife and fast-action sports."