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It's difficult to find too many faults with a 36-year-old who's still capable of anchoring one of the NBA's more fearsome defenses.
Kevin Garnett ranked 29th in the league in terms of points per possession allowed in the 2012-13 regular season (0.76), according to Synergy Sports (subscription required). In the 108 times he directly defended a post-up attempt, opponents only scored 0.64 points per post-up (17th in the league).
Garnett also gobbled 25.8 percent of the total defensive rebounds available to him throughout the regular season. Once Jared Sullinger went down with season-ending back surgery at the beginning of February, Garnett started grabbing 28.8 percent of all defensive rebounds while on the court.
He's been the captain of the Boston Celtics' defense since joining the team in the summer of 2007, and old age hasn't dramatically slowed down that part of his game yet. He's still the same barking, snarling, rabid canine of a defender that he always has been.
Offensively, on the other hand, his game declined somewhat in 2012-13. He failed to shoot 50 percent from the field for the first time since joining the Celtics, most of which can likely be associated to problems with his ankles and Rajon Rondo missing the second half of the season.
If there's any question about whether K.G. can still produce as he approaches his late-30s, there shouldn't be. Garnett ranked second on the team (behind only Paul Pierce) with a season-long plus/minus rating of plus-112, and averaged nearly 14 rebounds per game against the New York Knicks in the C's first-round playoff series.
Ultimately, Garnett's future in Boston appears tied to Pierce at this point. If the Celtics buy Pierce out for $5 million this summer or opt to trade him, Garnett could decide to hang up his basketball shoes for good.
If the 2012-13 season was the end for Garnett, he went out just as he should: as a proud, old champion.
2012-13 Season Grade: A-