McGrady last played in the NBA during the 2011-12 season, averaging 5.3 points and 16.1 minutes per game for Atlanta.
He played in the Chinese Basketball Association this year, averaging 25 points, 7.2 rebounds and 5.1 assists. ESPN
I like T-Mac, I think he can be a decent player and add extra scoring when he needs, but I doubt he will have a giant impact for the Spurs who are heading into the playoffs. T-Mac may be effective in 1 game, but that's it. But he's an old guy and the Spurs love old guys, so this is a perfect fit.