How well has James Shields pitched this season? Evan Longoria has an answer.

"If we were any better offensively the whole year he'd probably have 20 wins by now," Longoria said.

Shields was at it again Monday, firing another complete-game in the Rays 5-1 victory against the Rangers in front of a Labor Day crowd of 13,130.

Shields, who has a major league-best 11 complete games, became the first pitcher since Randy Johnson in 1999 to throw that many complete games in the major leagues and the first since Scott Erickson in 1998 to throw that many for an American League team.

Getting old, right?

"It definitely doesn't feel routine for me," Shields said. "I'm definitely as excited about this one as I was the first one of the year."

Had the Rangers not scratched out a ninth-inning run with the help of a leadoff walk by Shields, than Shields would have turned his fifth shutout of the season.

As it was, Shields tied his career-high with his 14th win, set in 2008.

"It feels pretty good, especially with four games to go," he said. "It's a lot of hard work, a lot of hard work put into this season. I'm not done yet."