Exploiting wRC+ Splits in 2026

With a third of the season in the books, the sample size for certain data and metrics has grown from too small to large enough that it must be taken seriously. The New York Yankees post a wRC+ of 123 against left-handed pitching — the best mark in baseball. The Mariners, another pre-season World Series contender, sit at 75. That 48-point gap between the two elite lineups on paper, against southpaws, is no longer such a small sample that we need to ignore it. Leveraging platoons has long been an important strategic lever for lineups looking to gain an advantage. Using wRC+ through the first stretch of the 2026 season, we can see every team’s offensive production against left- and right-handed pitching to find where the real discrepancies lie, and how we can target these matchups on both sides of the ball as we move deeper into the season, and what trends we should be watching.

Biggest Gains vs. RHP — SEA (+38.9), MIL (+27.2), PIT (+24.3), TEX (+31.1), ATH (+21.3) are all dramatically better vs RHP than LHP. These are teams where you’d want to target a left-handed starter.

Biggest Gains vs. LHP — ARI (+28.4), BOS (+21.3), WSN (+17.4), CHW (+20.0), and CIN (+14.5) perform much better against lefties compared to RHP.

Southpaw Struggles

If we start with the teams that have struggled most against southpaws, Seattle is the most glaring example of the difference between handedness splits. With a lineup built around left-handed hitters following the additions of Josh Naylor and Brendan Donovan in the offseason, complemented by young infielders Colt Emerson and Cole Young and right-field platoon options Luke Raley and Dominic Canzone, whenever a lefty is on the mound, the potency of their offense drops from a 115 wRC+ to below 80. This has been compounded by offseason addition Rob Refsnyder – historically an effective small-side platoon bat – being one of the worst-qualified hitters in the league. Despite having one of the strongest offenses in baseball on paper, they are a legitimate target for streaming a pitcher when facing a left-hander. Conversely, the likes of Raley, Young, and Donovan, when he returns from injury, are legitimate streaming platoon options from a fantasy perspective as well, when facing right-handed pitching. Julio Rodriguez is the exception — posting a wRC+ of 198 against left-handed pitching, he is a must-start regardless of the matchup, given his OPS against southpaws this season. Given their inconsistencies this season against left-handed pitching, a matchup against a lefty like Jeffrey Springs — who they face this week in Sacramento — is a strong streaming option, as this is exactly the profile of a pitcher they have struggled against all year.

Texas’s +31 differential is the second-largest gap in the dataset behind Seattle. With a team wRC+ of just 74 against left-handed pitching and a .603 OPS, the Rangers are one of the weakest lineups in baseball when facing a southpaw. Some of the individual splits explain why. Evan Carter is currently posting an almost impossible wRC+ of -40 against lefties, even if across just 29 plate appearances. Stars Wyatt Langford sitting at -2 and Corey Seager at 41 are more concerning from a Rangers point of view. They don’t project to face any left-handed starters over the next 10 games, but they’re well worth considering moving forward, as they’ve underwhelmed offensively for the second year in a row. Any confirmed left-handed starter drawing a Texas matchup should be treated as a near-automatic stream regardless of format.

The San Diego Padres, despite their record, have been carried by their pitching. With the best bullpen in the league, they can get ahead early and shut games down with the likes of Adrian Morejon and Mason Miller. Well below average offensively against any pitcher, you could easily argue they are a targetable matchup regardless of handedness, given their current offensive form. But they are particularly inept facing lefties. With a few left-handed matchups coming up this week, Foster Griffin in particular could be a nice buy-low and stash candidate, or a stream option against the Padres.

Another interesting cluster of teams sits between 80 and 90 wRC+ against lefties. Milwaukee, Pittsburgh, Athletics, and Baltimore have all been below expectations vs LHP, while statistically performing well against right-handed pitching. Toronto and Kansas City are two teams falling well below average against both. Any southpaw drawing one of these matchups is worth a look.

Milwaukee’s roster tells one of the most interesting internal stories from these wRC+ splits. Andrew Vaughn and Gary Sánchez both have a legitimate case for being the best platoon bats in baseball right now — Vaughn posting a 1.454 and Sánchez a 1.145 OPS against left-handed pitching are numbers that belong in a different conversation entirely from the rest of their lineup. Yet Brice Turang at a wRC+ of 68, Luis Rengifo at -1, and Sal Frelick at 8 drag the team number down significantly. The 27-point differential tells you this lineup has a genuine vulnerability against southpaws, with Yelich carrying much of the remaining offensive load alongside the two elite platoon bats. With no projected lefty matchups coming soon, it will be interesting to watch if the rest of the offense can get closer to those three bats, or if it’s the other way around. For now, Vaughn and Sánchez are must-starts against any southpaw, and outside of Yelich, the bigger names on this roster deserve a harder look at their handedness splits before you pencil them in automatically.

Righty Regrets

There are expectedly fewer options to target when right-handers are on the mound, but there are some pretty interesting disparities, with lineups favouring southpaw pitchers. Boston immediately stands out. After starting the year so poorly, they have begun to find a little form, but a wRC+ of 85 is very concerning. They have had some pretty rough matchups so far this season already, including Cam Schlittler, Jacob Misiorowski, Hunter Brown, and Spencer Strider, to name just a few, but their lineup has the talent has to perform better. They have been scoring more runs despite being swept by the Twins; however, there are some nice matchup opportunities for your Braves and Guardians pitchers, such as Bryce Elder and Tanner Bibee, for example, who could be available in some leagues. There are no other standouts from a pitching perspective of lineups with a wRC+ lower than 90 against RHP to target outside of Boston, and then the Mets and Rockies, who will be discussed in their own category. However, from a hitting perspective, there are a couple of teams that have huge differentials between the two.

Arizona’s differential is 28 wRC points and when they face a left-hander, they are one of the best offenses in baseball. Corbin Carroll defies the left-on-left narrative and leads the charge with a wRC+ of 241 against left-handed pitching, an absolute must-start regardless of matchup, given his numbers against southpaws this season. With a plethora of switch hitters complementing Carroll, they have been phenomenal against lefties, and Ildemaro Vargas, in particular, has an OPS of 1.000 against left-handed pitching. Ketel Marte has followed a poor April with a very hot May and could still be considered a buy-low candidate. The other discrepancy of note is the Chicago White Sox — even with left-handed bats like Munetaka Murakami and Sam Antonucci in the lineup, Randal Grichuk has been one of the best platoon bats in baseball, and is an obvious stream with three left-handed starters projected over the upcoming week.

Other Notes

Oh, Colorado. Some offenses are so inept they are reverse-handedness-proof from a pitching perspective. You can stream any pitcher against this Rockies offense, particularly on the road. But even being well below average against right or left-handed pitchers, they have distinctly worse splits against lefty pitchers with a deplorable 68 wRC+. Streaming any starting pitcher against Colorado away from Coors Field is a completely viable strategy. Interestingly, the Mets’ offensive struggles really come to light here. Being grouped with the Colorado Rockies offensively is as unthinkable as any outcome possible from preseason. While Colorado is the league’s worst offense, the Mets are a pretty comfortable second, while their star power means this shouldn’t continue through 162 games. For now, they are definitely a target matchup for both right and left-handed pitchers. At the other end of the spectrum, it is little surprise to see the Dodgers in the top right-hand corner with a 119 wRC+ against both splits. Other elite offenses are also matchup-proof despite some small biases, such as the Yankees, Braves, and Cubs.

As we progress deeper into the summer months, these splits will only reinforce themselves, and streaming based on pitching handedness will become an increasingly viable strategy.