Giants right-hander Brett Tomko is looking for his first victory over Chicago since 2003 in Wednesday's 11:20 a.m. PT finale at Wrigley Field.

In his last two outings vs. the Cubs, Tomko sports an 11.82 ERA, giving up seven earned runs in 5 1/2 frames. He's 2-4 lifetime with a 5.29 ERA in 10 career appearances against Chicago.

In four outings at Wrigley Field, Tomko is 2-1 with a 4.50 ERA.

Pitching matchup
SF: RHP Brett Tomko
• 7-10, 5.03 ERA in 2005
• 0-0, 18.00 ERA vs. CHC in 2004

CHC: RHP Carlos Zambrano
• 7-4, 3.42 ERA in 2005
• 0-0, 3.86 ERA vs. SF in 2004

Player to watch
Yorvit Torrealba continues to struggle offensively. He's hitless in his last three games (0-for-7) and is 8-for-33 (.242) in his last nine starts. Traditionally, however, he excels in August.

Quotable
"We'll put J.T. [Snow] in there tomorrow against Zambrano." -- Felipe Alou, on putting Snow back in the starting lineup Wednesday after the first baseman missed two games with a stiff back

On the Internet
MLB.TV
Gameday Audio
• Gameday
• Official game notes

On television
• SF: FSN Bay Area
• CHC: WGN

On radio
• SF: KNBR 680
• CHC: WGN 720

Quick hits
Giants catcher Mike Matheny could miss a game or two, as there's an illness in his family. He elected to stay with the club for now. ... Matheny has nailed 16 of his last 43 base stealers (37.2 percent) since May 12.

On deck
• Thursday: at Milwaukee, 5:05 p.m. PT
• Friday: at Milwaukee, 5:05 p.m. PT
• Saturday: at Milwaukee, 4:05 p.m. PT