This article is part of our Yahoo DFS Baseball series.
PITCHER
Hector Santiago, MIN vs. DET ($30): The lefty has settled in and allowed just five runs over his past five starts. It's a middling matchup (Detroit owns a 16th-ranked .322 wOBA against southpaws), and Santiago hasn't pounded the strikeout column, but another tidy start would have contrarian upside at a small investment.
James Shields, CHW at PHI ($28): The Phillies have been worth picking on all season, and they're sitting with a 25th-ranked .296 wOBA in September and a second-worst .297 wOBA against right-handed pitchers for the season. Shields is coming off his best start since July with eight strikeouts and a single run allowed over six innings against Cleveland. The cost of admission is worth a speculative stab he's able to follow it up against the lowly Phillies.
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CATCHER
Tom Murphy, COL vs. STL ($14): It's been a smooth transition to the majors this season for Murphy and, while it's a small sample size (19 plate appearances), the rookie owns a .493 wOBA against right-handed pitchers. Add the favorable setting in Coors Field to Adam Wainwright's 5.64 ERA over his past eight games, and Murphy is a nice bargain.
FIRST BASE
Kennys Vargas, MIN vs. DET ($15): It's not a eye-opening matchup against Matt Boyd, but the Tigers lefty has still allowed a .339 wOBA to right-handed hitters. Vargas has gone wild against southpaws, though. He's posted a .366 wOBA against lefties during his career with a .647 mark this year.
SECOND BASE
Ben Zobrist, CHC vs. CIN ($13): A high-floor asset at a discounted price, Zobrist grabs Josh Smith in his first start of the season. Zobrist has posted a .343 wOBA against right-handed pitchers this season and hits in middle of a potent lineup. And in a relief role, Smith has surrendered a .388 wOBA to left-handed hitters.
THIRD BASE
Jorge Polanco, MIN vs. DET ($12): A cheap stack option alongside Kennys Vargas, Polanco has posted a .418 wOBA against lefties this season. As noted, Boyd isn't a pushover, but he did allow seven runs over 3.2 innings to the Twins last Tuesday.
SHORTSTOP
Aledmys Diaz, STL at COL ($17): The rookie hasn't handled lefties well this season, sporting a .309 wOBA. You should hope it keeps his ownership down, because Jorge De La Rosa has served up a .357 wOBA to right-handed hitters at Coors Field this season after a .358 mark in 2015.
OUTFIELD
Josh Bell, PIT at MIL ($14): The price is ticking up, but this is a great matchup for Bell. Matt Garza has allowed a .360 wOBA to left-handed hitters this season, and Bell's started his career with a .385 mark against righties.
Brandon Drury, ARI at SD ($14): Playing everyday and bouncing around the heart of the lineup, Drury is scorching hot with a .527 wOBA in September. It's also a solid matchup with Paul Clemens allowing a .433 wOBA against right-handed hitters.
Nomar Mazara, TEX vs. LAA ($11): Daniel Wright is making just his fifth career start, and he's allowed a .411 wOBA to left-handed hitters this season. Mazara is more of a boom-or-bust flier, but at this salary his .342 wOBA against right-handed pitchers makes him an upside source of cap relief.