Is there any active player in the NBA that has aged as gracefully as Tim Duncan? In his 17th professional season, the towering center continues to be a force in the paint and one of San Antonio's key contributors.

This year, the Spurs have managed to remain one of the west's top teams to beat at 24-7, and tonight they'll end 2013 with a home game against the Brooklyn Nets, another team that relies on battle-hardened vets like Kevin Garnett and Paul Pierce. Don't be surprised if 37-year-old Tim Duncan ends up outperforming these guys along with some of the league's younger stars.

Four years ago today, on December 31, 2009, Tim Duncan and the Spurs hosted a pre-LeBron Miami Heat. Duncan was up to his usual tricks, dropping 23 points, 10 boards, and 3 assists on the Heat for a double-double. San Antonio would go on to blow out Miami 108-78 as they racked up their fourth straight win.

Tim Duncan's been with adidas for the majority of his career, and in 2009, the Three Stripes got a little adventurous as they laced Duncan in this skeleton-inspired TS Commander LT PE. This skeletal style was actually designed to coincide with Halloween, but Tim Duncan must have been a fan of the unique look, because he wore them well beyond the spooky holiday.

RELATED: SPOTTED: Tim Duncan Scores 31 points and 18 Rebounds in the adidas Flight Path
Today in Performance Sneaker History: Tim Duncan Leads Spurs to McDonald's Championship in the Nike Flightposite One