Buy Low, Sell High Fantasy Baseball Trade Advice for Week 12 (2026)

June 16, 2026

Joey's fantasy baseball buy low, sell high trade advice for Week 12 of 2026. His undervalued fantasy baseball trade targets and overvalued players to trade away.

Welcome, RotoBallers, to our weekly buy/sell fantasy baseball trades advice article for Week 12 of the 2026 season, highlighting the best players to trade for and trade away. If you are new to this weekly series, we look at the best players to buy and sell each week of the fantasy baseball season. 

This week's edition will look at five more trade candidates. We will dive into three fantastic buy lows and two sell highs. Better days are ahead for all three buy-low candidates, while the two sell-high candidates are currently overvalued in most fantasy baseball leagues right now. It's best to make moves surrounding these five players right now.

Which players should fantasy managers buy and sell for Week 12 of the fantasy baseball season? Let's dive in and find out.

Undervalued Fantasy Baseball Players to Trade For

Bryan Woo, SP, Seattle Mariners

Seattle Mariners starting pitcher Bryan Woo has not been as consistent on the mound as he usually is. He currently owns a 4.28 ERA across 82 innings pitched, and his 24% strikeout rate is a bit down from last year (27.1%). Woo has also really struggled his last two times out, as he allowed five runs across 6 1/3 innings against the Tigers on June 5 and gave up seven runs across five innings against the Orioles on June 11.

Woo has not been a top fantasy pitcher for most of the last seven weeks. He has a 5.58 ERA in his last nine starts since April 25 and has allowed at least five runs in four of those nine outings. Despite this recent stretch, though, the Mariners right-hander is a must-buy-low target in all fantasy formats in Week 12 of the fantasy baseball season.

Five straight strikeouts for Bryan Woo 😮‍💨 pic.twitter.com/Lt4VLBVZfP

— MLB (@MLB) May 19, 2026

Woo's metrics suggest his numbers should turn around in the next few weeks. His expected ERA (3.29) is 99 points lower than his actual ERA (4.28), and his expected batting average against (.234), chase rate (34.5%), and walk rate (4.6%) all rank in the upper half of the league. He also ranks in the 93rd percentile in Pitching Run Value (11) and 96th percentile in Fastball Run Value (10).

The 2025 All-Star has not been that elite fantasy option since mid-April. That gives fantasy managers a prime opportunity to trade for a pitcher who is due for some positive regression moving forward.

Sal Stewart, 1B/2B/3B, Cincinnati Reds

Cincinnati Reds infielder Sal Stewart came out of the gate red hot. He batted .303 with nine home runs, five doubles, 29 RBI, and seven stolen bases in his first 27 games. Since then, Stewart has hit a rookie wall. The 22-year-old is batting a mere .213 with four home runs, eight doubles, 13 RBI, and three stolen bases over his last 43 games.

Sal Stewart adds to the Cincinnati lead with an RBI single 🔥

📺: Sportsnet pic.twitter.com/a9FKHXN8oH

— Sportsnet (@Sportsnet) June 15, 2026

Stewart has been nowhere near the player he was at the start of the season. His batting average has dropped all the way down to .247, and he has just one home run since May 21. But the Reds rookie projects well the rest of the year, which is why he's a solid buy-low target at this point in the season.

Stewart still owns a strong .361 xwOBA, .257 expected batting average, .477 expected slugging, 90.7 mph average exit velocity, and a 14.9% barrel rate. All five of those metrics rank in the upper half of the league, and his 14.9% barrel rate ranks in the 90th percentile. Better days are definitely ahead for the young rookie, especially since he gets to play half his games at the hitter-friendly Great American Ball Park.

Make a move for him now before his bat starts to heat up again.

Nathan Eovaldi, SP, Texas Rangers

It has been a weird year of sorts for Texas Rangers starting pitcher Nathan Eovaldi. He's had outings where he looks like that All-Star caliber pitcher. The veteran has three different starts of throwing seven shutout innings with at least seven strikeouts. There are also outings where Eovaldi just looks like a pitcher clearly past his prime.

Recently, Eovaldi has looked like the latter on the mound. He has a 5.23 ERA and 28 strikeouts in his last five starts and has allowed 19 earned runs across 32 2/3 innings pitched during this span. While the Rangers right-hander has completed at least seven innings in three of his last five outings, he has given up at least three earned runs in each of his last five starts.

His 5.23 ERA since May 23 gives fantasy managers a small buy-low window.

Eovaldi continues to throw strikes at an elite clip. That's a large reason why he has completed at least seven innings in six of his last eight starts. His 14.2% swinging strike rate is the best of his career, his 29% CSW% (called + swinging strike rate) is above-average, and both his chase rate (36.2%) and whiff rate (29.5%) rank in the top 20% of the league. He's one of the top buy-low pitchers to target this week.

Overvalued Fantasy Baseball Players to Trade Away

Emerson Hancock, SP, Seattle Mariners

Seattle Mariners starting pitcher Emerson Hancock is in the midst of a breakout campaign. He owns a 3.28 ERA across 79 2/3 innings pitched, and his 24% strikeout rate is way up from a season ago (16.6%). However, now is a good time to start fielding trade offers for Hancock, as some negative regression is likely to hit him over the next couple of weeks.

For starters, the right-hander is coming off his worst start of the year. He allowed a season-high six runs on nine hits with two strikeouts across four innings pitched against the Nationals on Sunday. This outing could be a sign of what's to come for Hancock moving forward. He got hit hard in that start, with eight different hits allowed over 97 mph.

Additionally, Hancock's metrics aren't encouraging. His expected ERA (4.45) is 117 points higher than his actual ERA (3.28), and his expected batting average against (.255), average exit velocity (90.5 mph), chase rate (25.6%), barrel rate (10.7%), and hard-hit rate (44.7%) all rank in the bottom 35% of the league.

It's only a matter of time until his numbers start to decline on the mound. He is pitching far better than his metrics suggest, and Hancock could eventually be demoted to the bullpen if he struggles in the near future. The Mariners have five other qualified starters on the big league roster, and pitching prospect Kade Anderson is knocking on the door of a promotion.

That's enough reason to sell him now in all formats.

Ceddanne Rafaela, 2B/OF, Boston Red Sox

Boston Red Sox outfielder Ceddanne Rafaela is having a solid all-around season. He is slashing .286/.341/.450 with seven home runs, 14 doubles, two triples, 32 RBI, and seven stolen bases across 66 games. Rafaela has also been a steady offensive contributor over the last month, as he is batting .302 with 15 extra-base hits, 17 RBI, and five stolen bases in his last 30 games since May 8.

The @RedSox were down 5-0 when the 8th inning started ...

Now it's a 1-run ballgame 👀 pic.twitter.com/0glFCkBhqq

— MLB (@MLB) June 10, 2026

Although Rafaela has been a nice source of batting average, home runs, and stolen bases this season, he is someone fantasy managers should be looking to sell at this point in the year. The 25-year-old is simply overperforming in fantasy right now. His metrics tell a completely different story from his actual numbers.

His expected batting average (.247) is 39 points lower than his actual batting average (.286), and his expected slugging (.367) is 83 points lower than his actual slugging (.450). On top of that, Rafaela ranks in the 25th percentile in xwOBA (.299), 16th percentile in average exit velocity (86.8 mph), 27th percentile in hard-hit rate (36.2%), and 33rd percentile in barrel rate (6.6%).

Get rid of him now before his numbers start to fall.

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