Buy Low, Sell High Fantasy Baseball Trade Advice for Week 6 (2026)

May 6, 2026

Joey's fantasy baseball buy low, sell high trade advice for Week 6 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 6 of the 2026 season, highlighting the best players to trade for and trade away. If you are new to this weekly series, we dive into the best players to buy-low and sell-high each week of the fantasy baseball season. 

For this week, we will look at five trade candidates. The three buy-low players haven't been solid fantasy options lately, but they are all fantastic buys at this point in the season. The two sell-high players are currently overperforming and should be sold in all formats while their fantasy value is extremely high. 

So, which players should fantasy managers buy and sell for Week 6 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 was one of the most consistent fantasy pitchers last year. He finished with a 2.94 ERA and 198 strikeouts across 186 2/3 innings pitched and allowed more than four runs in just three starts in 2025. However, the 2026 season has been a slightly different story for Woo.

The right-hander hasn't really been sharp on the mound over his last two starts. He gave up seven earned runs across three innings against the St. Louis Cardinals on April 25 and then allowed six earned runs across six innings against the Royals in his most recent start on Friday. After allowing more than four runs in only three outings last season, Woo has done that in back-to-back starts for the first time in his career.

These recent poor outings make Woo one of the better buy-low options in fantasy. He'll eventually figure it out on the mound and has the tools to return to being a top-20 fantasy pitcher. His expected ERA (4.07) and FIP (4.22) are both slightly lower than his actual ERA (4.61), and the Mariners pitcher is still missing bats at an elite clip on his sweeper (39.6% whiff rate).

Bryan Woo's 3rd, 4th and 5th Ks...and Sword ⚔️ pic.twitter.com/ZI4fCfuPWE

— Rob Friedman (@PitchingNinja) April 19, 2026

That's why it's pivotal to buy Woo before his next start because his fantasy value will never be lower. This is the same pitcher who had a combined 2.92 ERA and 299 strikeouts across both the 2024 and 2025 seasons.

Corey Seager, SS, Texas Rangers

There are some fantasy managers who are worried about Texas Rangers shortstop Corey Seager. He is batting just .213 with six home runs, six doubles, 17 RBI, and one stolen base across 33 games this season and is currently in a bit of a slump at the plate. Seager has just four hits over his last 27 at-bats (.148) with zero home runs and 10 strikeouts dating back to the beginning of last week.

But Seager is clearly a buy-low candidate at this point in the year. He's a veteran hitter who has done this for a very long time, and his metrics suggest some positive regression is on the way in the next few weeks. The lefty slugger ranks in the top 25% of the league in expected slugging (.475), average exit velocity (91.2 mph), barrel rate (16.1%), hard-hit rate (47.1%), and walk rate (12.6%).

Corey Seager hits a LONG home run to double the @Rangers lead! pic.twitter.com/QyW6VXqHVD

— MLB (@MLB) April 24, 2026

Seager has also gotten a bit unlucky at the plate, as his expected batting average (.247) is 34 points higher than his actual batting average (.213). That makes him a prime trade target in Week 6 of the fantasy baseball season. Trust his prior track record and trade for one of the best power-hitting shortstops in the game. The 32-year-old has hit at least 30 home runs and driven in over 70 runs in three of the past four seasons.

Garrett Crochet, SP, Boston Red Sox

It has been an interesting start to the season for Boston Red Sox starting pitcher Garrett Crochet. He began the year by throwing six shutout innings with eight strikeouts against the Cincinnati Reds on Opening Day and then allowed a career-worst 11 runs (10 earned runs) across 1 2/3 innings against the Minnesota Twins on April 13.

Now, Crochet finds himself on the 15-day injured list due to left shoulder inflammation. He landed on the IL back on April 29 following six scoreless innings with seven strikeouts against the Baltimore Orioles. The good news is that the southpaw has no structural damage to his shoulder and is expected to return from the IL in mid-May. He played catch on Sunday for the first time since the injury.

With the southpaw currently on the shelf, that makes now the best time to trade for the two-time All-Star pitcher. Crochet showed some positive things in his last outing before landing on the IL, and he's pitching slightly better than his numbers suggest. Both his expected FIP (3.69) and strikeout rate (26.8%) are extremely encouraging despite the numbers on the mound.

The only reason Crochet has such a high ERA is because of one bad start. If you remove that outing against the Twins, the left-hander has a solid 3.49 ERA and a 30.8% strikeout rate in his five other starts. That's enough reason to trade for the Red Sox pitcher while he is on the injured list.

Overvalued Fantasy Baseball Players to Trade Away

Ozzie Albies, 2B, Atlanta Braves

Atlanta Braves second baseman Ozzie Albies has been on another level offensively this season. He is batting .331 with eight home runs, eight doubles, and 23 RBI across 36 games and has been even more impressive at the plate over the past few weeks. Albies is batting .410 with four home runs and 14 RBI on his current 16-game hitting streak.

This recent hot stretch gives fantasy managers the perfect opportunity to sell Albies high in all formats. While the switch-hitting second baseman has been one of the best fantasy options in the early going, some massive regression could be headed his way. His average exit velocity (86.9 mph), barrel rate (4.1%), hard-hit rate (28.9%), bat speed (69.2 mph), and chase rate (36.4%) all rank in the 20% of the league.

There's no doubt that Albies has overperformed through the first few weeks. He isn't hitting the ball hard, and his expected batting average (.267) is 64 points lower than his actual batting average (.331). So, see what you can get for the Braves' second baseman at this point in the season. There's a good chance you could get multiple solid players in return.

Mickey Moniak, OF, Colorado Rockies

Colorado outfielder Mickey Moniak started the season on the 10-day injured list due to a finger injury. Since coming off the IL on April 3, though, Moniak has been one of the hottest hitters in baseball. The 27-year-old is batting an absurd .333 with 11 home runs, six doubles, 21 RBI, and one stolen base across 28 games. He also has a 1.123 OPS to begin the season.

Everything about Moniak's season has been sensational. His power numbers are up, his barrel rate is up (15.1%), his Batting Run Value (18) ranks in the 99th percentile, and his .533 expected slugging places him in the top 10% of the league. However, there are still plenty of concerns surrounding the lefty slugger, which is why he's a sell-high candidate in Week 6 of the fantasy baseball season.

Mickey Moniak's 10th homer of the season puts the @Rockies on top! pic.twitter.com/GYmyZT2m65

— MLB (@MLB) May 3, 2026

For starters, his numbers outside of Coors Field aren't really great. He's batting .256 with two home runs and six RBI in 13 games on the road compared to .389 with nine home runs and 15 RBI in 15 games at home. Moniak also struggles in the swing-and-miss department. His whiff rate (28.4%), chase rate (40.6%), and strikeout rate (24.3%) all rank in the bottom half of the league.

Given those concerns, the Rockies outfielder is worth selling in most formats right now. He's clearly overperforming early on.

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