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Dan's top hitter streamers and starts as fantasy baseball waiver wire adds for Week 4 of 2025 (April 21 - April 27). He analyzes streamers with favorable matchups, schedules.
The most active fantasy baseball players are typically those who take home the hardware at the end of the season. Being a proactive manager and streaming players is one way to get ahead of your league mates, so let's hit the waiver wire to see what hitters might be worth an add for Week 4!
Our hitter streamers fantasy baseball waiver wire pickups column will identify hitters with favorable matchups who can be considered waiver wire streamers ahead of the Sunday night waiver wire runs for leagues with weekly transactions. Players who appear in this article will always be rostered in 40 percent or fewer leagues on Yahoo!
In this piece, every week, I'll look to find hitters playing in the most games and who have the most favorable matchups to help you plug those gaps and fill those holes in your roster. You can also check out the rest of our fantasy baseball streamer content here at RotoBaller.
Be sure to check all of our fantasy baseball lineup tools and resources:- Fantasy baseball trade analyzer
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- PvB matchups data (Pitcher vs. Batter)
- Who should I start? Fantasy baseball comparisons
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- Fantasy baseball injury reports
What Teams Offer The Most Streaming Value in Week 4?
Most teams are playing six games this week.
The Cubs and Dodgers play only five times, however.
The Red Sox, White Sox, Giants, and Brewers all play seven games.
Ballpark Upgrades:
- CHW (Three games at Sacramento)
- TEX (Three games at Sacramento)
Week 4 Fantasy Baseball Hitter Streamers
I'll recommend only players who are 40 percent rostered or lower, and all roster percentages are from Yahoo!
TJ Friedl, OF - CIN (34 percent rostered)
This is the third time, I think, in four weeks that I have mentioned TJ in my article. Despite hitting .307 and leading off for a pretty good Reds lineup, Friedl is still not getting a ton of respect in fantasy leagues.
The power numbers haven't been there yet, but this is a guy with some pop in his bat, and the warm weather in Cincinnati is coming eventually. He has three steals so far and could easily finish around 20 on the season. If he's healthy, he feels like a lock for a 20-20 season. My long-term outlook on him is very positive, and in the short term, he looks good this week with a chance to feast on Marlins pitching and then three games in Coors next weekend.
Cam Smith, 3B/OF - HOU (27 percent rostered)
The rookie is finally beginning to come on and flash the power that had so many of us excited to snag him in the late rounds of drafts. He started the year slowly at the plate, but a lot of young hitters have that issue when trying to adjust to major league pitching.
First career multi-homer game for Cam Smith! pic.twitter.com/Qv3Lilxhf1
— MLB (@MLB) April 19, 2025
Smith has three home runs on the year now, with two coming in the same game against the Padres on Friday night. He has three multi-hit games over his last ten and has his average up to .231 on the season. I am all about buying low on this toolsy young player while you still can. The Astros are committed to playing him every day, and I think he could have a very solid rookie year when it's all said and done.
Sal Frelick, OF - MIL (27 percent rostered)
I am a sucker for Sal Frelick, I admit it. The guy can hit, and he finally got under one and lifted his first home run of the season this week.
This fan was ready for Sal Frelick's first home run of the season 😂 pic.twitter.com/XR70F003dr
— MLB (@MLB) April 16, 2025
You're not picking him up for home runs, but he does have an excellent hit tool and is a good bet to hit .300 this year while also being an above-average base stealer with five already on the year.
I suppose he's guilty of being a bit "boring," but I think he's a handy fantasy player for any team that needs some outfield depth and a boost in AVG, R, and SB.
Pavin Smith, 1B/OF - ARI (24 percent rostered)
I am not sure what everyone is waiting for with Pavin Smith. The guy is destroying baseballs and has his average up to .392 on the season. He's quickly gone from platoon player to the regular No. 3 hitter in a potent Arizona lineup, showing no signs of slowing down.
Smith is probably not a 30-HR hitter, but he can probably sustain a solid batting average while contributing RBI and HR. I love that he's eligible in the outfield, too, as versatility is always an added bonus.
I would bid aggressively on Smith with FAAB, as I think he could provide some solid value for the rest of the season. He's more than just a streamer.
Mike Yastrzemski, OF - SF (12 percent rostered)
Yaz has been leading off against RHP lately and is having a nice start to the year. The Giants' offense has been surprisingly good through their first 19 games, and Yaz has been a big part of that hot start.
With the Giants playing seven games this week, I'm all for snagging Yaz where you can and rolling him out there while he's hot. He will probably sit if they face a lefty on the mound, but he's been coming into games as a pinch hitter and getting some at-bats late in games, too. There is some HR, RBI, and even some SB upside here.
Gabriel Arias, 2B/3B/SS - CLE (17 percent rostered)
I'll admit, I was not aware of the power that Arias has for a middle infielder. He hit 10 home runs over 345 plate appearances back in 2023, but is nearly halfway to matching that number with four dingers in his first 19 games of 2025.
GABRIEL ARIAS GOES 425FT 😳
The 25 year old now has 4-HR and owns the fastest bat speed for any 2nd baseman in baseball pic.twitter.com/oFvwMn52qY
— Fuzzy (@fuzzyfromyt) April 16, 2025
He still strikes out a lot (nearly 30 percent), but I'm probably willing to trade the contact for that type of power at a position where home runs don't come in bunches. I'll be honest, I have no idea if he can keep this up, but for the time being, I am interested in picking him up and riding it out with how thin the middle infielding positions are for fantasy production.
Trent Grisham, OF - NYY (15 percent rostered)
Did anyone expect Grisham to have five home runs already this season and to be hitting .326 through the first month? He's been found money for the Yankees and should continue to play against RHP. The Yanks go to Cleveland this week, where left-handed power plays well. Grisham is a nice stop-gap if you need someone for the short-term, but I am not all that optimistic that he can produce like this all season.
Austin Hays, OF - CIN (13 percent rostered)
Hays has made a huge impact for the Reds since entering the lineup last Tuesday. He has a hit in all five starts and three home runs. It's probably a very fluky good start for him, but he's earning more playing time as a result, when he was probably just expected to platoon against left-handers.
This is very much a "ride the hot hand" situation, as I am not sure that Hays will be able to remain productive all season, but with the Reds heading to Coors Field this week, I am all about picking up Hays where you can and getting as much out of him as possible.
Jake Mangum, OF - TBR (11 percent rostered)
Still no home runs for Mangum, but he has started to play every day for Tampa Bay, and as a switch-hitter, he isn't forced into a platoon like so many of the other Tampa hitters.
Mangum is hitting .328 and is now up to eight steals on the season. He might only be helpful in average and steals, but those are two categories that are difficult to find on the waiver wire. Give him a look if you need help in those categories.
Week 4 Deeper League Fantasy Baseball Hitter Streamers to Consider
Some widely available hitters (under 10 percent rostered) could be worth a look this week.
- Matt Mervis, 1B - MIA (nine percent rostered)
- Heston Kjerstad, OF - BAL (eight percent rostered)
- Kyle Stowers, OF - MIA (eight percent rostered)
- Ty France, 1B - MIN (six percent rostered)
- Dillon Dingler, C - DET (five percent rostered)
- Jake Meyers, OF - HOU (three percent rostered)
Good luck this week, and choose those streaming options wisely!
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