Fantasy Baseball Trade Targets - Buy/Sell for Week 7 (2025)

Fantasy baseball trade candidates to buy/sell for Week 7 (2025). Joey's fantasy baseball undervalued players to target in trades, and overvalued to trade away.

Welcome, RotoBallers, to our weekly trade targets piece. Every Friday, we go through the best players to trade for and trade away for the following week. Players like Dylan Cease, Freddie Freeman, Julio Rodriguez, and Brandon Nimmo have all been featured on the buy-low section of this article over the past few weeks. 

In this article, five new players will be discussed as trade targets below. The buy-low options are players currently struggling to be solid fantasy options, while the sell-high players are putting up strong numbers that are not sustainable for the rest of the season. Fantasy managers should act fast on both groups because baseball changes so quickly. 

So, which players should we buy and sell for Week 7 of the 2025 fantasy baseball season? Let's dive in and find out which players make the list. 

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Undervalued Fantasy Baseball Players to Trade For

Matt Olson, 1B, Atlanta Braves

Although Atlanta Braves first baseman Matt Olson might be hard to trade for, there could be a small buy-low window. He is batting just .209 (9-for-43) with two home runs, five RBI, and 13 strikeouts over his last 12 games. Given that Olson has struggled offensively for most of the year, some fantasy managers might be willing to trade him.

 So, see what it would take to acquire the two-time All-Star ahead of Week 7.

Olson also went through a similar slump to begin the 2024 season after hitting just .209 with four home runs and 18 RBI in his first 38 games. However, the left-handed slugger returned to fantasy stardom in the middle of May by hitting .258 with 25 home runs and 80 RBI over his final 124 contests. 

Matt Olson goes deep! pic.twitter.com/u6empK7d8H

— Talkin’ Baseball (@TalkinBaseball_) May 3, 2025

That makes Olson a fantastic player to trade for right now. Things will eventually even out for the Braves' first baseman, and he has gotten a little bit unlucky at the plate to begin the season. His expected slugging (.537) is 132 points higher than his actual slugging (.405).

On top of that, his average exit velocity (94.7 mph), barrel rate (16.5%), and hard-hit rate (56.7%) all rank in the 90th percentile or better. 

Therefore, another 30-home run, 100-RBI campaign is surely attainable for Olson in his 10th major league season. 

Junior Caminero, 3B, Tampa Bay Rays 

It's not a surprise to see Tampa Bay Rays third baseman Junior Caminero go through ups and downs in his first full major league season. The 21-year-old was slashing .284/.325/.527 with five home runs and 11 RBI through his first 20 games in 2025. Over his last 15 contests, though, Caminero is hitting just .197 with two home runs, one double, and five RBI. 

Going through these rough stretches is a part of baseball, and the Tampa Bay third baseman was always going to hit a rookie wall. However, Caminero is too talented not to bounce back from this slump. That makes now the perfect time to trade for him. 

Caminero is just two years removed from a 31-home run, 94-RBI campaign in the minors during the 2023 season, and he has shown some encouraging things in his first 135 at-bats this year. His 91.8 mph average exit velocity, 49.5% hard-hit rate, and 20.4% whiff rate all rank extremely well in the early going. 

As a result, the 21-year-old is the perfect buy-low candidate heading into Week 7. With an elite 78.5 mph bat speed, it's hard not to envision Caminero hitting at least 25 home runs and driving in over 80 runs in 2025. If you need some power in your roto leagues, the Rays' third baseman might be the answer. 

Shane Baz, SP, Tampa Bay Rays

Through the first few weeks of the season, Tampa Bay Rays starter Shane Baz looked like a steal at his preseason ADP. He threw six scoreless innings with 10 strikeouts against the Pittsburgh Pirates on April 1, seven innings of two-run ball with six strikeouts against the Los Angeles Angels on April 8, and six innings of one-run ball with 11 strikeouts against the Boston Red Sox on April 14. 

However, Baz hasn't been as strong of a fantasy option in recent outings. Although he tossed seven shutout innings with six strikeouts against the San Diego Padres two weeks ago, he has gotten rocked in three of his past four starts. In his last two outings, the right-hander has given up 13 runs across nine innings pitched. 

Baz, though, will be just fine moving forward. His expected ERA (3.35) is 158 points lower than his actual ERA (4.93), and opposing hitters have an expected .220 batting average against him to start the season. So, fantasy managers should expect some better outings from him moving forward. That makes him one of my favorite buy-low pitchers at this point in the year. 

Shane Baz's last four starts:

19.1 IP, 25 H, 18 ER, 10 BB, 13 K, 3 HR allowed

8.38 ERA, 1.81 WHIP

— Frank Stampfl (@Roto_Frank) May 8, 2025

It's also important to note that Baz has faced four really good teams (Yankees, Padres, Royals, and Phillies) in his last four starts. He won't face those juggernaut offenses all year, and his schedule does lighten up. The right-hander will face the Blue Jays (twice), Marlins, and Astros over the next three weeks. 

Overvalued Fantasy Baseball Players to Trade Away

Javier Baez, SS/OF, Detroit Tigers 

It has been awesome to watch Javier Baez's resurgence at the plate after he struggled mightily during the 2023 and 2024 seasons. Baez hit a combined .208 with 15 home runs, 96 RBI, 20 stolen bases, and 194 strikeouts in 216 games across those two years. But this season has been a different story for the two-time All-Star. 

He is hitting .317 with three home runs, eight doubles, and 19 RBI in his first 30 contests in 2025. Baez has also totaled four straight multi-hit games and currently carries a nine-game hitting streak into the weekend. Unfortunately, this hot streak won't last forever for the 12-year veteran. 

GRITTY TIGS 😤

Javier Báez joins the home run barrage! pic.twitter.com/E3vUjCcOU2

— MLB (@MLB) May 3, 2025

His expected batting average (.240), hard-hit rate (32.4%), squared-up rate (23.3%), chase rate (40.5%), and xwOBA (.288) all rank extremely poor through the first six weeks of the season. Therefore, fantasy managers should expect some regression for him in the coming weeks.

That makes Baez a great sell-high candidate amid his strong start.

Matthew Liberatore, SP, St. Louis Cardinals 

St. Louis Cardinals pitcher Matthew Liberatore has shown breakout potential to start the year. He owns a 3.07 ERA and 38 strikeouts across his first seven starts. The left-hander has also had some great starts against top offenses, including six scoreless innings with seven strikeouts against the Phillies on April 13 and six 2/3 innings of two-run ball against the Mets on April 19. 

However, fantasy managers should use his strong start and try to sell him before his fantasy value drops. Liberatore is allowing a lot of hard contact through his first seven starts, which could spell some trouble for him moving forward. His 44.8% hard-hit rate currently ranks in the 27th percentile. 

The southpaw also has some tough matchups upcoming. Even though he has looked great against some better offenses this season, the Phillies will face him for the second time on Tuesday. The Phillies will definitely be ready for whatever Liberatore throws at them this time.

After that, he will face the Royals and Diamondbacks. 

So, now might be the best time to trade away the left-hander. With a middle-of-the-pack whiff rate (25.7%) and a .239 xBA, we might see some rougher outings for Liberatore over the next few weeks. 

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