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Starting Pitcher Barometer, Week 15: All-Star Break Buy & Sell Edition

We’re a bit beyond the halfway point of the 2021 season as we head into the All-Star break. Those who invested in Ronald Acuna, Jr. aren’t feeling too thankful today (myself included), but there is plenty to be thankful for. Namely, things could certainly be worse on the COVID front. We also haven’t faced a slew of pitching injuries (yet) following the sticky substance ban.

What we are about to be dealing with, however, is a heap of innings concerns. Last week I mentioned Trevor Rogers looking at an innings cap. This week, you’ll notice that Tarik Skubal and Casey Mize have tumbled down the ranks. They are going to be facing pitch and innings caps as well. Over his past two starts, Mize in particular has tossed just 56 and 50 pitches. Those guys just aren’t going to do you a lot of good if they rarely pitch into the fifth inning.

With that in mind – there isn’t a ton of movement within the list this week. Between a late edition of the Barometer last week following the holiday and a lot of bullpen games leading up to the break, there just isn’t a ton to scrutinize. Instead, I’m going to focus on some buy-low and sell-high candidates for the second half.

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The Starting Pitcher Barometer

Sell-High Candidates

Freddy Peralta, MIL (SP15) – Don’t get me wrong, I love me some Freddy P. He was even my Starting Pitcher Dude back in the preseason! Through 18 games (17 GS) he has an incredible 2.39 ERA with a sexy-time 12.40 K/9. He’s crept all the way up to SP15 in my ranks, after all. So why sell?

The nice thing about dealing away Peralta now is that he was free money. He cost you almost nothing back in draft season. You’ve now reaped the reward of an ace’s stats for a full half of the season. A running theme here, as you may have noticed, is innings limit issues. Freddy has already amassed more innings this year (98) at the MLB level than any other season before. The most he has ever pitched in a single season, including the minors, was 139.1 IP in 2018. Does he have the stamina to put up another 80 innings without fading down the stretch?

He also hasn’t been bit by his poor 4.04 BB/9 too badly yet. However, he’s been fortunate with a .178 BABIP and 84.8% strand rate. He could easily pitch closer to his 3.70 xFIP over the second half of the season if more of those baserunners come around to score.

Lance McCullers, Jr., HOU (SP25) – Reading this McCullers blurb is going to feel like shaking a magic 8-ball and getting the same response as you got with Freddy Peralta. Which reminds me – please stop grabbing me by the shoulders and shaking me when you see me in public, people. My replies will be hazy, ask again later.

McCullers has spent plenty of time on the IL throughout his MLB career. Through 14 starts, he has tossed 79.2 innings, having already spent some time on the IL. He has roughly 50 innings to go until he ties his career-high mark of 128.1 IP back in 2018. As with Peralta, McCullers has a tasty sub-3.00 ERA (2.94). His K/9 is also appealing, at 10.05. Again, like Peralta, his walk rate is poor (4.63) but he’s been cushioned by a .260 BABIP and 80.3% strand rate. His HR/FB% is nearly a career-low at 9.4%. Some HR regression and more of those baserunners coming around to score could lead to a second-half ERA closer to his current xFIP of 4.09. Outlook not so good.

Taijuan Walker, NYM (SP41) – Walker has been a great success story for the Mets so far. Through 16 starts (90 IP) he has an even 2.50 ERA, 1.03 WHIP, 8.90 K/9, and 3.00 BB/9. However, nothing really stands out when you pull up his Baseball Savant page.

Walker Sliders

Nothing is terribly troubling, per se, but it’s hard for me to squint and see another half of 2.50 ERA baseball. Contact your local Mets homer and try to pawn Walker off for a profit while you can. His .249 BABIP and 7.1% HR/FB could easily regress over the second half. He then could certainly put up something much closer to his current 4.08 SIERA with unspectacular strikeout numbers.

Kyle Gibson, TEX (SP45) – I’ve had a hard time buying into this hot stretch from Gibson. Not only did I watch many, many years of him being pretty awful with the Twins, but there isn’t any massive strikeout rate jump coinciding with the 2.29 ERA or anything like that. What he has done to fuel this success is throw his new-ish cutter 13% of the time. The cutter itself hasn’t been great, with a .412 wOBA against. It has helped his slider play up, though (.178 wOBA, 44.4% whiff%). With a below-average strikeout rate overall, a lot of regression chickens are going to come home to roost over the second half. It wouldn’t surprise me if he pitched more like his current 4.15 SIERA the rest of the way.


Buy-Low Candidates

Aaron Nola, PHI (SP20) – You can’t write up a buy-low piece without including Aaron Nola right now. A veteran who has pitched like an ace for years and has the 10th best K-BB% among qualified starters (24.1) but a 4.53 ERA? What madness is this?! All of his ERA indicators have him deserving of an ERA well under four. His SIERA is all the way down at 3.27. This one is easy. Hit up your local Nola owner, who may well be sick of Nola’s disappointing starts. He’s in store for a lot of quality innings the rest of the way.

Luis Castillo, CIN (SP23) – Few starters opened worse than Luis Castillo. He was probably even dropped in some shallow leagues. On the season, he still has a cold 4.65 ERA. However, it may surprise you that Castillo has been one of the best pitchers in baseball over the past 30 days. He hasn’t allowed more than three earned runs in a start since May 23! Since then, he has six quality starts in nine tries. Perhaps the Castillo owner in your league simply hasn’t been paying attention. Perhaps he/she simply doesn’t buy the rebound. Whatever the case, kick the tires on Castillo in your league. You might get yourself a discounted ace for the second half.

Luis Castillo ERA Graph

Frankie Montas, OAK (SP46) – As with Castillo, it’s been a roller coaster ride with Montas this year. On the season he has a 4.41 ERA, thanks in no small part to an 8-ER outing against Texas. His previous success came thanks to the splitter he developed in 2019. That pitch wasn’t there for him in 2020 (.408 wOBA), and it still wasn’t as effective to open the 2021 season. However, if his latest start is any indication, things are about to turn around for Frankie.

Montas game log

Against the red-hot Astros, Montas went to his splitter as much as his fastball. It earned a 58% whiff rate and 46% CSW! With renewed confidence and increased usage in the splitter, Montas could get back to the front-end type starter we expected after 2019.

Chris Paddack, SD (SP54) – Over the past 30 days, no one has a worse ERA-FIP than Chris Paddack. With a 4.93 gulf between his 8.06 ERA and 3.13 FIP, Paddack has to be shaking his fist at the baseball gods. However, Paddack still has the stuff to be a mid-rotation fantasy starter. His 9.47 K/9 and 2.10 BB/9 are just fine, and his 3.58 FIP is downright promising. Without a great third pitch, his ceiling is still somewhat limited. Still, you should be able to acquire his services for next to nothing in a lot of leagues, as his ERA still sits at 5.38 for the year.


Top 100 Starting Pitcher Rankings

RnkNamePrev. Rank
1Jacob deGrom1
2Max Scherzer2
3Yu Darvish3
4Brandon Woodruff4
5Zack Wheeler5
6Gerrit Cole6
7Kevin Gausman7
8Carlos Rodon8
9Lucas Giolito11
10Corbin Burnes10
11Lance Lynn12
12Walker Buehler13
13Joe Musgrove14
14Robbie Ray18
15Freddy Peralta15
16Trevor Rogers16
17John MeansNA
18Julio Urias17
19Pablo Lopez19
20Aaron Nola20
21Sonny Gray22
22Charlie Morton28
23Luis Castillo29
24Framber Valdez21
25Jose Berrios23
26Lance McCullers24
27Tyler Mahle25
28Chris Bassitt31
29Sean Manaea30
30Sandy Alcantara26
31Zack Greinke27
32Yusei Kikuchi32
33Shohei Ohtani34
34Ian Anderson35
35Hyun Jin Ryu37
36Kyle Hendricks41
37Zach Plesac38
38Dylan Cease36
39Luis Garcia40
40Zach Eflin33
41Taijuan Walker44
42Kenta Maeda46
43Anthony DeSclafani42
44Shane McClanahan43
45Kyle Gibson45
46Frankie Montas53
47Jake Odorizzi54
48Nathan Eovaldi47
49Alex Wood49
50Max Fried50
51Alek Manoah52
52German Marquez57
53Eduardo Rodriguez56
54Chris Paddack48
55Blake Snell51
56Marcus Stroman55
57Tony Gonsolin64
58Jon Gray61
59Jordan Montgomery59
60Zach Thompson60
61Patrick Sandoval62
62James Kaprielian58
63Tylor Megill65
64Logan Gilbert76
65Adam Wainwright73
66Tarik Skubal39
67Wade Miley79
68Chris Flexen75
69Patrick Corbin67
70JT Brubaker63
71Rich Hill69
72Michael Pineda70
73Domingo German72
74Kwang Hyun Kim74
75Triston McKenzieNA
76Cole Irvin80
77Logan WebbNA
78Jameson Taillon87
79Nick Pivetta71
80Ross Stripling78
81Alec Mills86
82Casey Mize66
83Alex Cobb89
84Dane Dunning82
85Eric Lauer83
86Ryan Yarbrough84
87Andrew Heaney88
88Adbert Alzolay77
89Ryan Weathers91
90Johnny Cueto94
91Merrill KellyNA
92Danny Duffy85
93Vladimir Gutierrez97
94Brady Singer98
95Steven Matz95
96Dallas Keuchel100
97Mike Minor90
98Adrian Houser92
99Brett AndersonNA
100Drew Smyly99

Fell Off The List:

Clayton Kershaw (Injury), Joe Ross (Injury), Anthony Kay (Role), Bailey Ober (Performance), Caleb Smith (Performance).

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