Perhaps it's because your team is playing against Tina Charles. From SwishAppeal's freelantz:
It's hard to imagine a rookie who's already nabbed herself the share of a franchise record midway through her first season, but Charles has done just that. Her almost pedestrian - at least for her - 16 points and 12 rebounds are her sixth double-double in a row and 12th of the season through 15 games.
And there is your record, ladies and gentlemen. Not even a rookie record yet, but a franchise record. Charles' 12 double-doubles has tied a Connecticut Sun record and she still has 19 games to play.