It's a wide-open slate on Tuesday. Clayton Kershaw and Zack Greinke are the only bona fide aces, and there are guys like Sean Newcomb, Andrew Heaney, and Jack Flaherty, who are all having big seasons. Otherwise, it's a throng of streamer-types who could be out after two innings or take a no-hitter into the seventh. That makes for some fun picks, so let's dive in.
Pitchers to stream
Shane Bieber (R), rostered in 52 percent of ESPN leagues, Cleveland Indians at Kansas City Royals: Bieber has been fantastic in four MLB starts with a 3-0 record, 2.22 ERA and 22-percent K-BB rate in 24 innings. He did allow 18 hits in his first two starts (5 2/3 IP in each), but has allowed just 10 in his last two (13 innings) as he's found his footing. The Royals are dead last against righties in both wOBA and ISO.
Zach Eflin (R), 47 percent, Philadelphia Phillies vs. Baltimore Orioles: Eflin's been a surprise standout, adding a few ticks to his fastball and taking off from there. He was electric in June with a 1.76 ERA, 0.98 WHIP and 18-percent K-BB rate in 31 innings. His contact management has been incredible this season with a 27-percent hard contact rate, good for third in baseball just behind Noah Syndergaard and teammate Aaron Nola. The Orioles are 27th in wOBA against righties with the sixth-highest strikeout rate at 25 percent.
Junior Guerra (R), 40 percent, Milwaukee Brewers vs. Minnesota Twins: I've been wanting to see Guerra's splitter get back on track before really buying into him and that may just be happening. He has a 3.15 ERA and 1.22 WHIP over his last six starts with the splitter allowing just .321 OPS and a 52-percent strikeout rate in 29 plate appearances. The Twins aren't a wretched offense, but their 19th wOBA (.311) against righties isn't a deterrent from using a spot starter like Guerra.
Projected game scores
Robinson Chirinos (R), 10 percent, Texas Rangers vs. Houston Astros (LHP Dallas Keuchel): Chirinos has a career .857 OPS against lefties, 130 points higher than his work against righties. He's only hit .209 against them this season thanks in part to a .250 BABIP, but he still has a quality .805 OPS with five of his nine hits going for extra bases and a 15-percent walk rate.
Jake Bauers (L), 19 percent, Tampa Bay Rays at Miami Marlins (RHP Trevor Williams): After getting just a pinch-hitting appearance in last night's extra-inning affair, Bauers is likely to start against a right-hander. He has almost as many walks (18) as strikeouts (22), and he's taking advantage of the MLB power environment with a .218 ISO.
Joe Panik (L), 10 percent, San Francisco Giants at Colorado Rockies (RHP Antonio Senzatela): Our Coors bat for the day, Panik has been good against righties with a .298 AVG and .804 OPS in 131 plate appearances. He's loved his time in Coors with a .444/.477/.636 line and three homers in 108 career plate appearances.
Jeimer Candelario (B), 25 percent, Detroit Tigers at Chicago Cubs (RHP Kyle Hendricks): Candelario has posted a .205 ISO against righties this season, and half of his June hits went for extra bases. He also regularly bats in the upper third of the order. Hendricks is allowing a .240 ISO to lefties and has twice as many walks against them than he does righties. He's also allowed homers in six of his last seven starts (1.7 HR/9).
Enrique Hernandez (R), 38 percent, Los Angeles Dodgers vs. Pittsburgh Pirates (RHP Ivan Nova): Did you know Hernandez has 14 homers? He has always been known for hitting lefties well (career .868 OPS), but his power has taken off against righties this season with seven homers, which is one more than he hit against them from 2015-17 (six in 397 PA). Nova has allowed eight homers against righties this season, his highest rate since the injury-shortened 2014.
Todd Frazier (R), 18 percent, New York Mets at Toronto Blue Jays (RHP Marco Estrada): Frazier's had a rough year, but he has done his best work against righties with a .754 OPS (compared to .564 vs. lefties) and seven of his nine homers. Estrada has allowed an .849 OPS to righties and his flyball lean leaves him prone to homers even at his best (1.4 HR this year; 1.2 in 2015-16 when he was dominating).
Johan Camargo (B), 9 percent, Atlanta Braves at New York Yankees (RHP Domingo German): Camargo has done his best work against righties, though it's due in large part to his walk rate against them (16 percent; 6 percent vs. lefties). He's been surging his last 15 games, too, with a .351/.387/.491 line in 62 plate appearances.
Aaron Hicks (B), 39 percent, New York Yankees vs. Atlanta Braves (LHP Sean Newcomb): A three-homer game will likely send his roster rate upward, but for now he's still pretty widely available. Hicks is an all-star talent, but health regularly gets in his way. He's playing now and absolutely raking (.947 OPS in 11 games before the 3-HR game) of late, so scoop him and hold.
Jesse Winker (L), 8 percent, Cincinnati Reds vs. Chicago White Sox (RHP Lucas Giolito): Winker's patience has given him a better line against righties, as his .794 OPS is fueled by a .389 OBP (14-percent walk rate), and he's shown flashes of power. But we're really picking him to go against Giolito. The 23-year-old righty has allowed a .397 wOBA against lefties, third-highest in baseball. He has a 16-percent walk rate and just a 9-percent strikeout rate against them. Start any and all Cincinnati lefties.
Brandon Guyer (R), under 1 percent, Cleveland Indians at Kansas City Royals (LHP Danny Duffy): Keep an eye out to make sure he's in the lineup, but he's a career lefty-destroyer. He has an .832 OPS this season and .857 from 2015-17. Righties have an .839 OPS against Duffy this season with 17 homers, second-most in the league behind only Cole Hamels (19).
Hitter matchup ratings
Hitter ratings account for the opposing starting pitcher's history (three years' worth) as well as ballpark factors. "LH" and "RH" ratings account only for left- and right-handed batters, respectively.
Weighted on-base average (wOBA) is the primary statistic used in the calculation. Ratings range from 1 to 10, with 10 representing the best possible matchup, statistically speaking, and 1 representing the worst. For example, a 10 is a must-start rating, while a 1 should be avoided (if possible); a 1-2 is poor, 3-4 is fair, 5-6 is average, 7-8 is very good and 9-10 is excellent.