2021 Fantasy Baseball Week 15 Stock Up/Stock Down

by Mike Sollicito
2021 Fantasy Baseball Week 15 Stock Up/Stock Down

Welcome to the 2021 Fantasy Baseball Stock Up/Stock Down Week 15 article!

As the second half closes in on us, players get healthy and prospects begin getting called up. That's the case this week, as two young studs in Jarred Kelenic and Eloy Jimenez look on track to play at some point in the second half.

It's also time to really begin evaluating your team and making some tough roster decisions. Players who have been slumping, is it one big slump, or have they actually just been really bad this year? If you've got a player who has not been hitting well at all lately, maybe bench them instead of playing them every day because of their name.

Just as important as it is to add players from the waiver wire, it's just as important to add those players into your lineups. Don't be afraid to bench someone with name value over someone performing well.

These habits are hard to shake in fantasy, but numbers don't lie. Play to win, not to have the most known team.

And as always if there are any questions, comments, or concerns you may have for players on your roster or team in general, don't hesitate to reach out to me on Twitter @MikeSollicito1! Time for Week 15!

2021 Fantasy Baseball Week 15 Stock Up/Stock Down

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Stock Up

Tylor Megill, SP, New York Mets

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Tylor Megill has been fantastic since his call-up, and quite frankly I think he has a chance to stick in the rotation. Yes, they have guys like Noah Syndergaard and Carlos Carrasco who should be coming back in the second half, but I think there will still be room for Megill.

With quality pitching this year hard to come by now that there are no more sticky substances, guys like Megill are important to find. He offers four different pitches, two of which have over a 40% whiff rate.

Megill's slider and changeup are fantastic and then add in his 95-96 mph fastball. This kid could really be something if the Mets keep him in the rotation. Now I get it, it's a small sample size. But you can't deny the stats and he has been very impressive so far.

For me, I would say he is a must-add in every league, but I think if you don't have the room for him, then at least keep an eye on him.

Jarred Kelenic, OF, Seattle Mariners

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Jarred Kelenic, one of baseball's top prospects is set to be recalled early in the second half. The Mariners have all but called him up at this point, as it's been reported by multiple sources. Kelenic did struggle his first go around, but he had an abysmal .109 BABIP. For those who don't know, the league average is .300.

So he was getting very unlucky, and after a shaky start in the minors after his demotion, he got right on track. Kelenic should really show people why he is considered a top prospect in the second half.

He has the potential to be a five-category stud in the future, and for now, he should help you in everything besides average. I think it will still be solid, but not near what he can actually hit.

Kelenic is a must-add in all leagues if he is still available. I think he has a big second half for the Mariners as they look to somehow take the second wild-card spot.

Eloy Jimenez, OF, Chicago White Sox

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Eloy Jimenez, one would have thought you died if they saw the White Sox Twitter post. He did not die, but he did, however, suffer what was believed to be a season-ending injury. However, he has been rehabbing on his own and was recently cleared to begin his rehab assignment.

While it is expected to be a lengthy rehab assignment, he could return sometime early August which would provide a huge boost for fantasy owners.

He already homered in a game during his rehab, and recently said he felt "200 percent healthy."

Grab Eloy if he is available in your league and you can stash him on your IL. He could really win your team the playoffs if he comes back and tears it up right away. This was supposed to be a big year for Eloy from a fantasy production standpoint.

Stock Down

Cavan Biggio, 2B/3B/OF, Toronto Blue Jays

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Cavan Biggio is simply not cutting it anymore. He has a not-so-great .226 average with 24 Runs and RBIs and six homers to three steals. The power/speed ability is nice but other than that he has not been great.

I spoke about him in an early article and stated he was a bench candidate until he heats up. However, he has not gotten hot and has actually been somehow worse after the injury. The Blue Jays have a jampacked lineup, so if they need to Biggio can hit the bench more often than not.

His positional eligibility is nice for both us in fantasy and the Blue Jays, but it may not be enough to get him in either lineup every day.

He walks a lot and doesn't chase much, but the strikeout rate is still high and he simply is not hitting the ball hard enough at all. For me, he's a droppable player as I head into the second half.

If you've rostered him this long, it's time to dump him to go find someone more productive on the waiver wire. Dropping guys like this won't be the reason you lose, but keeping them will be.

Nick Solak, 2B/OF, Texas Rangers

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Nick Solak, how far you have fallen. I was a big fan of him back in the preseason, and he proved me right during the first bit of the season. However, he at one point had a 34/1 K/BB ratio, and it was evident that the numbers would come crashing back to Earth.

Here we are now, and he is not hitting due to his high K rate. He has the power/speed combo one cherishes in fantasy, but it's tough to use the speed when you can't. His BaseballSavant is not very encouraging, littered with blues.

I wouldn't drop Solak, but if he is starting in your lineup then you have some much bigger issues. He is a bench bat for now in hopes that he finds the stroke he had early in the season once more. But I will warn you, until those strikeouts go down, that may not happen any time soon.

David Peralta, OF, Arizona Diamondbacks

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David Peralta has had his moments this year, so while his stock is trending down for right now there is a good chance he turns it around shortly after.

Peralta is a good hitter but is stuck on a not-so-great Diamondbacks team that really lacks anyone else in their lineup, especially with Ketel Marte injured. This is a classic case of someone who is known to be a hitter just simply is not hitting.

For me, I tend to wait for a few games to see if they can turn it around and then pull the trigger on dropping them or not. Peralta has maintained his good eye at the plate as he does not strike out much. He also doesn't walk much either, which is not always a bad thing.

He makes average quality of contact but holds a low .245 xBA. His BABIP is right around career average, so perhaps this slump has taken a toll on his numbers. For me, he is a very replaceable player via the waiver wire, so I would cut him while he is cold at the plate, and try to scoop him back up if he gets hot again.


There has been and will continue to be some fantastic fantasy baseball content happening over the remainder of the season. Don't miss out on the Fantasy Baseball Content here at Fantasy Six Pack as we head-on into the second half!

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