A look at what's happening all around the major leagues Saturday:

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CUB HUB

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The Cubs try for their ninth straight win when Jake Arrieta starts against the White Sox at U.S. Cellular Field. Arrieta is looking to extend his career-best streak of 17 2-3 scoreless innings. The North Siders from Chicago last won nine in a row in 2008.

JOIN THE CHASE

Chase Utley is still with Philadelphia, but for how long? The Giants say they've made a trade offer for the 36-year-old second baseman, who cleared waivers this week. Utley has spent his entire career with the Phillies.

GRAY MATTER

Athletics ace Sonny Gray will throw a bullpen session in Baltimore as he recovers from a nagging back problem. He leads the AL with a 2.06 ERA, but missed his last scheduled start because of spasms. Oakland is hoping he can pitch Monday vs. the Orioles.

MENDING MATZ

Mets rookie Steven Matz makes his first rehab start at Class A St. Lucie in the Florida State League. Promoted in midseason, the 24-year-old lefty won his first two starts in the majors and also drove in five runs. He's been out since early July because of a partially torn lat muscle.