Did some mathematics Saturday, and it turns out the Galaxy clinched a playoff berth with their victory Saturday night over D.C. United. As if their postseason status were ever in doubt.

L.A. (15-5-5) climbed to 50 points with the 2-1 triumph at the Home Depot Center, and although there are eight teams that can surpass them, only seven of them are capable of doing so.

What?

Here’s how it works, and even the Galaxy wasn’t sure of this until I showed them the math Saturday evening. Seven teams, the Galaxy included, can get to 55 points or higher. Two teams -- the Seattle Sounders and Kansas City Wizards -- can get to 51 if they win their remaining games. But both of them can’t.

Kansas City is home Oct. 9 against Seattle. A tie would lower both teams’ ceilings to 49, and a victory would drop the loser’s to 48.

Real Salt Lake can become the second team to clinch a berth with a victory next weekend over Rocky Mountain Cup rival Colorado.

Only D.C. United has been eliminated from postseason contention, but nobody’s really giving Houston, New England, Philadelphia, Chivas USA or Chicago a real shot.