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Monday's Fantasy Baseball Waiver Wire Targets: Mark Vientos, Colson Montgomery and More

Looking at a few waiver wire pitchers and hitters to consider adding in fantasy baseball leagues.

Morgan Rode Aug 25th 9:21 AM EDT.

Aug 23, 2025; Cumberland, Georgia, USA; New York Mets third baseman Mark Vientos (27) hits a home run against the Atlanta Braves during the ninth inning at Truist Park. Credit: Dale Zanine-Imagn Images
Aug 23, 2025; Cumberland, Georgia, USA; New York Mets third baseman Mark Vientos (27) hits a home run against the Atlanta Braves during the ninth inning at Truist Park. Credit: Dale Zanine-Imagn Images

After checking out some fantasy baseball waiver wire options based on weekly projections, let's now go over some more traditional waiver wire guys.

We'll skip any starting pitchers who were part of today's streaming article.

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Should You Add Jeff McNeil?

McNeil is up 4.56% and sitting at 25.11% overall.

McNeil has a .258 average and .351 on-base percentage over 93 games and 352 plate appearances this season. He's posted 16 doubles, 12 homers and four triples among his 78 total knocks, along with 44 RBIs, 36 runs scored, two stolen bases, 39 walks and just 37 strikeouts.

He went hitless on Sunday, but scored a run after walking. McNeil had two homers on Saturday. Over the month of August, the veteran is hitting .289 with a .349 OBP over 20 games and 84 plate appearances. He has six doubles and three homers among his 22 hits, along with 12 RBIs and runs scored, six walks and 10 strikeouts.

McNeil usually isn't starting against left-handed pitchers, so that limits his fantasy upside. He has hit fourth or fifth in his past three starts though, so that's a favorable fantasy spot to be in.

He has some deep-league appeal, and maybe is a bit underowned based on what he's done this month. He's played first and second base and all three outfield spots this season, so he could maybe help out at a few spots.

Look into McNeil and see if he'd be a help to your fantasy squad. He's just a deep-league asset in my eyes though.

Should You Add Emmet Sheehan?

Sheehan has been added in 3.05% of leagues, bringing his overall mark to 34.7%.

He will start on Monday night against the Reds. Sheehan faced them on July 30, taking a loss after allowing three unearned runs on a hit and three walks over 3 2/3 innings. Sheehan struck out five in that contest.

Sheehan has worked at least five innings in his three starts since. He's given up five and four runs over his past two outings, and sits with a 4.17 earned run average on the season.

Over 41 innings and nine appearances, he's allowed 24 runs (19 earned) on 36 hits and 15 walks, while striking out 44 batters. Sheehan is 4-2 so far this season.

The matchup is so-so, but based on what we've seen from Sheehan of late, I don't love him tonight. He's fine as a deep-league streaming option, but he's not a must-start guy in those leagues, and I'd avoid him completely in standard leagues.

His fantasy ceiling seems pretty limited, and his fantasy floor is probably lower than a lot of other streaming options too. 

Should You Add Mark Vientos?

Vientos is up 3.85% and is at 47.89% rostered overall.

He's on a seven-game hitting streak as a new week of play begins. Vientos has 10 hits during this stretch so far, including five home runs and two doubles. He's also tallied 11 RBIs, six runs scored, two walks and five strikeouts.

In 90 games and 349 plate appearances this season, Vientos has a .238 average and .284 OBP. He has 16 doubles, 12 homers and two triples among his 77 total hits, along with 43 RBIs, 31 runs scored, 20 walks and 80 strikeouts.

The primary third baseman has been mostly disappointing this fantasy season, but he's in a groove at the plate now. He's a good fantasy asset when he's right, and now is one of those times.

I think Vientos should be scooped up in all deeper leagues, while also being a pretty strong option in standard leagues because he's at a so-so fantasy position.

Vientos has hit between fourth-sixth over the team's past five games. The Mets are getting him in the lineup every day, and hitting in those spots gives him some good fantasy value.

He could be a sneaky good fantasy hitter down the stretch, so don't wait too long if you need help at third base or in the infield.

Aug 24, 2025; Chicago, Illinois, USA; Chicago White Sox shortstop Colson Montgomery (12) bats against the Minnesota Twins during the seventh inning at Rate Field. Credit: Kamil Krzaczynski-Imagn Images
Aug 24, 2025; Chicago, Illinois, USA; Chicago White Sox shortstop Colson Montgomery (12) bats against the Minnesota Twins during the seventh inning at Rate Field. Credit: Kamil Krzaczynski-Imagn Images

Should You Add Colson Montgomery?

Montgomery has been added in 2.55% of leagues and is now owned in 43.38% of leagues.

He has five hits over his past three games, with a homer in each game, so it's easy to see why he's on the rise. Montgomery has eight RBIs, four runs scored, no walks and a strikeout in that span as well.

Montgomery is hitting just .230 and getting on base at a .288 clip over his first 42 MLB games and 161 plate appearances. He has five doubles, a triple and 13 homers among his 34 total hits. Montgomery also has 36 RBIs, 23 runs scored, 11 walks and 44 strikeouts.

The average and big strikeout numbers aren't appealing, but the big power numbers should appeal to many fantasy owners. I bet if he was part of a better MLB team that his own percentage would be significantly higher.

He also should be eligible at third base and shortstop, so that's a plus in his favor as well. Montgomery bats in the top five in the order, so that's another positive.

Montgomery is going a bit overlooked in the fantasy baseball world right now, and most of that is likely because he's a White Sox. Give him an add and I bet you'll be pleasantly surprised over time.

I'd say he deserved to be rostered in all deeper leagues, and can start daily at an infield spot or extra utility slot. He's a decent standard league waiver option too, especially if you need help at third base or shortstop. 

Stop sleeping on Montgomery.

Should You Add Jared Triolo?

Triolo is owned in just 1% of leagues, but is starting to trend up a bit.

He enters the new week on a five-game hitting streak. Triolo has eight hits during this stretch, including two homers, a double and a triple. He has five RBIs, three runs scored, a stolen base, two walks and four strikeouts.

Triolo has played in 76 games and gotten 240 plate appearances so far this season. He's up to a .213 average and .308 OBP. Triolo has 10 doubles, five homers and a triple among his 44 total hits, along with 18 RBIs, 24 runs scored, nine stolen bases, 28 walks and 45 strikeouts. 

Triolo plays all over the field, so it's worth seeing where he's eligible to play. So far this season, he's appeared at first, second and third base and shortstop. He could be an underrated pickup in deeper leagues down the stretch.

He's not a must-add player, but Triolo should get a little love after people see his recent numbers, and position versatility. At the very least, Triolo can be a depth infield option, and fill in when starters are injured or off.

Don't let his low average fool you, because he's hot of late, and can be a good fantasy asset when he's hitting a bit.

It's also worth watching to see if he moves up the order eventually. He's mostly been near the bottom of the order, and only hits at the top of the order when a lefty is opposing the Pirates. Triolo could move up if he stays hot, and that would boost his fantasy value a good amount.

#waivers

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