Don't have an account?
Join the Best Live Fantasy Chat Community!

Lost password? [X]

Receive free daily analysis:


Already have an account? Log in here.


Forgot Password


Zac Gallen to Arizona: Don't Be Disappointed

Of all the players changing zip codes prior to the MLB Trade Deadline, Zac Gallen was not on anyone's list as a potential mover. As a promising young rookie off to a good start for a talent-starved team, it's befuddling why the Marlins chose to trade a young, controllable arm like him.

There are adequate reasons, which I'll outline below, but the bottom line for fantasy owners, especially in dynasty leagues, is that his value is somewhat in question now. He moves out of pitcher's park and away from the organization that had been grooming him in order to compete for a rotation spot in the desert.

On the other side, the fish did receive high-profile prospect Jazz Chisolm, who now rightfully lands on many radars based on the quick path to playing time. Let's take a look at both players in more detail to determine how to approach them in keeper leagues.

Editor's Note: Get any full-season MLB Premium Pass for 50% off, with exclusive access to our season-long articles, 15 in-season lineup tools and over 200 days of expert DFS research/tools. Sign Up Now!


Gallen's Rookie Season (So Far)

Prior to his call-up, I did an in-depth profile on Gallen around mid-May. That's when he was dominating Triple-A with a 1.79 ERA, 0.65 WHIP, and 11 K/9. Even then, I was cautious about his big-league potential because he was never touted as an elite prospect and doesn't have electric velocity to fall back on when his control isn't there. Next time, I'm throwing caution to the wind.

Gallen made his Marlins debut with a strong start against the Cardinals that saw him allow just one run and five hits over five innings. In seven Major League starts so far, he hasn't given up more than three runs in a game and has been stretched out to seven innings in each of his last two outings. Not only are the ratios there (2.72 ERA, 1.18 WHIP), they are accompanied by a 28.5% K-rate.

Despite having less-than-stellar fastball velocity, ranking in the 19th percentile at 92.3 MPH, he uses his four-seamer less than half the time. He throws hitters off balance with a cutter, curve, and change combo and has maintained an xwOBA of .320 or less on all four pitches. While his changeup is most effective at inducing whiffs, they all sit above 20% in swing-and-miss rate.


Dynasty Value Drying Up?

The biggest change for Gallen will be his home park. Marlins Park, a notorious pitcher's park, has mostly played as such this season. It ranks 54th in Home Run Factor for right-handed hitters and 57th for left-handed hitters. Arizona's Chase Field was once known as Coors Lite but the humidor truly has made a difference; it ranks 44th and 48th in Home Run Factor for RHB and LHB respectively. When looking at Run Factor though, Arizona has actually been better for pitchers (35 and 53) than Miami (18 and 33).

Gallen isn't really a ground-ball pitcher, so the lower HR Factor could make a slight difference. In all, much of this can be ignored because a home team's offensive capability plays a large role in these park factors. The bottom line is that Gallen won't necessarily be worse off moving from the beach to the desert.

With Zack Greinke gone, Gallen has a chance to step in and become the next... Zack Greinke. OK, it's a stretch to assume he'll ever reach that caliber but he will at least hold down a mid-rotation spot for the foreseeable future and figures to be a relatively safe SP for fantasy leagues. Gallen is a firm hold for those who own him in keeper leagues and is worth pursuing if the Gallen owner in your league is nervous about his post-trade value.


Talkin' All That Jazz

As mentioned above, in exchange for a 23-year-old starting pitcher under club control who had been impressive as a rookie, the Marlins got back one player: Jazz Chisolm. This was met with skepticism by the baseball community, as it seemed the Marlins were Marlins-ing again. In reality, this trade made all the sense in the world for Derek Jeter and company.

First, while young starters with excellent control are hard to come by, the club is suddenly in a position of wealth. Aside from Gallen, Jordan Yamamoto debuted this season and has been even better up until his last three starts. He may be hitting a wall in his rookie year but he should prove to be a dependable fourth or fifth starter behind Sandy Alcantara, Caleb Smith, Pablo Lopez, and eventually, Sixto Sanchez. The Marlins now find themselves with a bigger need to address than pitching - shortstop.

The team has used a combination of Miguel Rojas, J.T. Riddle, and Jon Berti at the most important defensive position, getting little offense in return. The keystone is set for years to come with impressive prospect Isan Diaz getting the call days ago, so Chisolm figures to be the last piece of the puzzle for a team that is building to compete in 2022 (no, seriously).

Jazz Chisolm was rated the top prospect in the Diamondbacks' minor league system by Baseball America before the 2019 season. By contrast, Gallen was ranked 18th in the Marlins' lowly farm system. This already implies that the ceiling is much higher. Then again, the floor is much, much lower.

Chisolm is a fluid athlete at 5'11", 165 lbs yet has high-end raw power (55) for such a diminutive middle infielder. The problem is that he strikes out a lot. He has been sent packing to the dugout 33.8% of the time this year at Double-A and has finished with a K-rate over 30% at two other stops already. The Marlins must have visions of a Chisolm/Diaz double-play combo putting up 50 combined homers. That may come at the expense of the team's overall OBP, however. Diaz ranks at a 60 in raw power but his K-rate has lived in the upper 20s throughout his minor-league career prior to 2019.

Chisolm is just 21 and has another year or two before he cracks the Marlins' roster but he is in position to inherit the shortstop job if he can find ways to improve his contact. He must be considered a boom-or-bust prospect at this point. In a format like Ottoneu where 4x4 scoring is common (without steals as a category) and power is prioritized, Chisolm is worth a stash in case he pans out.

More 2019 Fantasy Baseball Advice

More Recent Articles


Keenan Allen - Fantasy Football Disaster Recovery

Welcome to Disaster Recovery, where each week I'll examine why your studs played like duds. This isn't a place to find out why you should have sat a player for somebody on your bench. Disaster Recovery is to examine the guys who you didn't think twice about starting, and deciding if you should be panicking at all about... Read More

NFL Survivor Pool Picks (Week 7) - Targets and Avoids

Another week, more upsets. The Cowboys, Chiefs and Chargers all went down knocking out about 15-20 percent of remaining entrants in survivor pools, including myself. The Baltimore and New England wins were never in doubt, but the Redskins and Packers just barely squeaked out wins. If you've made it this far, you've done a job... Read More

Fantasy Football Risers and Fallers - Week 7

Whether due to their own play, the play of others, or injuries, players' stock increases and decreases on a weekly basis. Perhaps more than any other, the NFL is a league that experiences ups and downs at a rapid pace. With only 16 games, there’s little room for error and seemingly endless opportunities for improvement.... Read More

Running Back Metrics That Matter - NFL NextGen Stats

It's been a month--a full month!--since the last time we took a look at our beloved running backs. I don't think there is a hotter topic of discussion between pro- and anti-analytics than rushing. The guys fighting for stat-supremacy are all about using the passing game as much as possible while ditching the run; the... Read More

Titanic Disappointment - Will Ryan Tannehill Help Tennessee?

In the midst of being shutout by the Denver Broncos on Sunday, Tennesse Titans coach Mike Vrabel made a move that many casual NFL fans had been expecting for the past few weeks: he decided to give Ryan Tannehill a shot at quarterback instead of Marcus Mariota. While Tannehill wasn't noticeably better on Sunday, throwing... Read More

Warning Signs: Todd Gurley, Brandin Cooks, Robert Woods, Jared Goff

This is going to be a special edition of Warning Signs. Usually, we take a look at players from different teams who have disappointed thus far. This week, I am going to focus on a single team full of players to worry about. It is not good to have a team of big stars where... Read More

FAAB Bidding - Week 7 Waiver Wire Targets

Assisting our famous waiver wire pickups list, and our weekly waiver wire columns by position, this column focuses on suggested waiver wire bidding percentages for fantasy football owners in leagues using a Free Agent Acquisition Budget (FAAB). As a caveat, these prices do not by any means indicate how much these free agent players will... Read More

We Must Overreact Immediately! Week 6 Outliers

In Week 6, several players exploded in fantasy lineups. There were a few receivers that were above the rest of the pack in Week 6, such as Stefon Diggs, Terry McLaurin, Chris Godwin and Tyreek Hill, but there shouldn't be any surprises there as those guys should have been in fantasy lineups. At the quarterback... Read More

Deeper League Free Agent Pickups for Week 7

The bye week difficulties continue this week with Carolina, Cleveland, Pittsburgh, and Tampa Bay all getting their rest in Week 7. It should be noted, however, that just because a player is currently in their bye week, doesn't mean you should avoid them on the waiver wire. In fact, this is often the easiest way... Read More

Week 7 Waiver Wire Pickups & Adds

All of a sudden, the Chargers look like one of the worst teams in football and the Jets look like a playoff contender. Maybe things won't shake out that way in the end but it goes to show how quickly things change in the "Not For Long" NFL. For that reason, we advise looking at... Read More

The Cut List - Players on the Chopping Block (Week 7)

This is your weekly list of players to drop. I will do my best to limit this list to injured players and players you might consider holding. If you roster pure handcuffs or backups, obviously you can let them go at any time. The players on this list will, ideally, be guys that aren't clearly... Read More

Week 7 Defense (DEF) Streamers and Starts - 2019 Fantasy Tiers, Rankings

Below are RotoBaller's Week 7 defense tiers and rankings, or which defenses to stream, start and target off the waiver wire for Week 7 of the NFL and fantasy football season. In case you missed it, this is our seventh year now writing this weekly column. Our weekly tiered defense rankings are a guide to making waiver... Read More

Week 7 Kicker Streamers and Starts - 2019 Fantasy Tiers, Rankings

Week 6 is done, and we've seen some outstanding games thus far. We've also seen a lot of surprising teams through six weeks. The San Francisco 49ers, after picking in the top 10 for four straight years, are 5-0 with one of the most complete teams in football. As far as kickers go, we're seeing... Read More

Running Back Waiver Wire Pickups - Week 7

Some of you have been rewarded for your meticulous roster planning by receiving excellent production from your running backs. Unfortunately, many of you have been equally prepared when making roster decisions, but have been undermined by injuries, inconsistent usage, or underwhelming performances. If that applies to you, then those unwanted outcomes have forced you to... Read More

Wide Receiver Waiver Wire Pickups - Week 7

We weren't really surprised by the top-scoring fantasy wide receivers from Week 6. Out of the top-20 receivers, only Jamison Crowder, Auden Tate and Jaron Brown were less than 50% owned. Jaron Brown (0% owned) was only targeted five times but he scored two touchdowns off of those five targets. Auden Tate (23% owned) hauled... Read More