Kansas City and Chicago finish up their three game series this afternoon. By winning game one, KC assured itself of leaving the Windy City in first place. They then take on Tampa Bay while the White Sox face the Angels. Kris Wilson takes on Bartolo Colon, and both have been pitching well lately.

The other Missouri team, the St. Louis Cardinals are also in the playoff hunt and host Dontrelle Willis and the Flordia Marlins tonight. The Cardinals trot their own rookie to the mound, Danny Haren. Haren has been especially effective against lefty batters so far, allowing a .226 BA to lefties while righties are hitting .300 against him. He's a righty, and there haven't been many AB against him yet. I wouldn't take the numbers seriously, but it's something to watch for tonight.

Finally, Sidney Ponson makes his NL debut against Josh Fogg of the Pittsburgh Pirates. Fogg has allowed 20 ER in his last 21 1/3 innings.