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JEWISH BASEBALL NEWS — Newly-acquired P Jason Marquis will make his Arizona Diamondbacks debut today at 3:45pm EST, just days after the Washington Nationals traded the veteran right-hander for a minor-league prospect.

The first-place D’backs hope Marquis, 32, can strengthen their pitching rotation as the N.L. West pennant race tightens. The Manhasset, N.Y., native is 8-5 with a 3.95 ERA this season but has lost 3 of his last four decisions. The last-place Nats obtained single-A switch-hitter Zachary Walters in exchange. The trade also saved the Nats $2.3-million, the estimated remaining amount of Marquis’ 2011 salary.

“It’s an exciting time to know a team has enough confidence in you to be a part of a postseason run,” Marquis told the Washington Post.

Marquis will have a chance to earn that confidence in today’s game against the San Francisco Giants, who are tied with the D’backs for first place.

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