James Shields shouldn't be an underdog to Colby Lewis.



San Diego is a huge disappointment, but the Rangers have cooled off going 5-13 in their last 18 games.



Shields is one of the few San Diego pitchers to receive excellent run support. He's 7-3 and enjoying the best strikeout season of his distinguished career averaging more than 10 per nine innings.



What has hurt Shields is giving up the long ball. However, he's surrendered only two homers during his past seven starts.



Lewis has a 4.83 ERA. He was torched in his last start, giving up 10 runs on 12 hits to the Angels in just four innings.