Buy Low, Sell High Fantasy Baseball Trade Advice for Week 1 (2026)

March 31, 2026

Joey's fantasy baseball buy low, sell high trade advice for Week 1 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 1 of the 2026 season, highlighting the best players to trade for and trade away. Each week, we will go through the players that fantasy managers should be discussing in trade talks. Even though we are just a few days into the new season, there are plenty of trades to make early in the year. 

For this week, we will look at five players to buy and sell in fantasy baseball. The three buy-low players have gotten off to poor starts, but things should improve for them over the next few weeks. The two sell-high players are currently overperforming and will come back down to earth shortly. 

So, which players should fantasy managers buy and sell for Week 1 of the fantasy baseball season? Let's find out. 

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Undervalued Fantasy Baseball Players to Trade For

Jac Caglianone, 1B/OF, Kansas City Royals 

There's no doubt that Kansas City Royals outfielder Jac Caglianone has not gotten off to a strong start this year. He is just 2-for-10 with one walk and four strikeouts in his first four games and also sat on the bench to open the season with a lefty on the mound. All that has made Caglianone a frustrating player to own to begin the 2026 campaign.

However, the Royals outfielder is one of the best buy-low fantasy players to target in trades right now. The biggest rule of thumb in fantasy baseball is to be patient when it comes to young players. He only appeared in 62 games for Kansas City last year, and we are just four games into the 2026 season. As soon as Caglianone gets more comfortable at the plate, the power numbers are going to show up.

Jac Caglianone launches his 1st MLB home run! pic.twitter.com/xIGYcQUw1K

— Jomboy Media (@JomboyMedia) June 19, 2025

Caglianone hit .337 with 20 home runs and 72 RBI across 66 Minor League games last year. That's how much potential the 23-year-old has when he is at the top of his game. So, use his slow start to acquire him for cheap. He had a 12% barrel rate across 232 Major League plate appearances in 2025, and his expected batting average is looking solid in the early portion of this season.

Willy Adames, SS, San Francisco Giants

San Francisco Giants shortstop Willy Adames is one of the several hitters on the team who have looked lost at the plate in the early going. Adames went 1-for-11 with five strikeouts in the three-game series against the Yankees to begin the season, and the Giants were the only team in the Majors to not hit a home run over the weekend.

Despite the slow offensive start from Adames this year, he is a top buy-low candidate in Week 1 of the fantasy baseball season. It's not a total surprise to see the veteran go through a slump to begin the year. He will have plenty of ups and downs this season because that's just the type of hitter he is. But the 30-year-old has become a strong all-around fantasy option in recent years.

He hit .251 with 32 home runs, 112 RBI, and 21 stolen bases across 161 games in 2024 and then batted .225 with 30 home runs, 87 RBI, and 12 stolen bases across 160 games last year. Adames is going to put up big-time home run and RBI numbers while contributing double-digit stolen bases as well. That's why fantasy managers should be looking to trade for him. He'll eventually break out of this mini-slump.

Bo Bichette, SS, New York Mets

Things have not been great for Bo Bichette to start his New York Mets career. He went 1-for-14 with one RBI and eight strikeouts in New York's first series against the Pittsburgh Pirates, and those poor offensive numbers resulted in Mets fans booing the two-time All-Star just days into the new season. Some of Bichette's swings in that opening series were not pretty at all.

Fantasy managers, though, have to be patient with Bichette early in the season. We have seen players like Trea Turner take some time to get adjusted to playing in a new place. Once Bichette gets more comfortable playing with his new teammates, he is going to be a fantasy star. Last year, the 28-year-old batted .311 with 18 home runs, 78 runs scored, 94 RBI, and four stolen bases across 139 games for the Blue Jays.

Bichette also looked a bit more comfortable at the plate in Monday's contest against the Cardinals. He went 1-for-5 with two RBI and brought in each of those two runs in key spots. He put the ball in play to score Francisco Lindor following a leadoff triple in the first inning, and then hit a hard line drive to right-center field in the third inning to bring in another run.

Bo drives in another! 👏 pic.twitter.com/urkfzljlz8

— New York Mets (@Mets) March 31, 2026

So, make sure to target him in trade discussions because better days are ahead.

Overvalued Fantasy Baseball Players to Trade Away

Luis Robert Jr., OF, New York Mets

One of the bigger moves that the Mets made this offseason was trading for outfielder Luis Robert Jr. Robert has dealt with some injuries over the years and hasn't quite reached his full potential in the big leagues. In the one season he did stay healthy, the Cuban native hit .264 with 38 home runs, 80 RBI, and 20 stolen bases across 145 games in 2023.

The only problem is that the 2023 season is the only year in Robert's career in which he has played more than 110 games. Therefore, it might be smart to shop him amid a strong start to the 2026 campaign. The 28-year-old is off to a 5-for-12 start with one home run, five RBI, three walks, and two strikeouts across his first four games. Those numbers could make it easier to trade him.

WELCOME TO THE NEW YORK METS, LUIS!!! pic.twitter.com/kSJOou0hhu

— New York Mets (@Mets) March 28, 2026

With Robert's injury history, it's best to sell him high at this point in the year. He dealt with multiple hamstring injuries and a groin injury last season, battled through hip/hamstring issues in 2024, and played through hip, calf, finger, and quad issues across the 2023 season. The Mets outfielder has simply never been able to stay healthy in his career.

It's always tough to predict injuries in fantasy baseball, but Robert's injury history is extremely long. Save yourself the headache later in the year and get the most value out of the slugger right now.

Jose Soriano, SP, Los Angeles Angels

Los Angeles Angels starting pitcher Jose Soriano had a dominant Opening Day start against the Houston Astros. He threw six shutout innings with two hits, four walks, and seven strikeouts. Soriano was in control throughout his six innings of work last Thursday. The right-hander had a 42.6% chase rate, a 41.3% whiff rate, an expected .181 batting average against, and a 30.8% hard-hit rate in that outing.

That dominant performance has made Soriano one of the biggest risers in fantasy baseball leagues. His roster share is up since Opening Day, and he is now rostered in over 57% of Yahoo! leagues. If you are one of the many managers who have the Angels pitcher on your fantasy roster, it's time to sell high in all formats following that Opening Day start.

Soriano has been such an up-and-down pitcher so far in his career. He had a 4.26 ERA across 169 innings last year, and his strong Opening Day performance might not be a sign of what's to come for him this year. The 27-year-old hasn't made any noticeable adjustments to his arsenal this offseason. If someone in your league believes in him, trade him for what you can get.

He will also face the Cubs in his next start on Tuesday, so there's a strong chance his fantasy value drops a bit.

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