5 pitchers who could be in the Pittsburgh Pirates' rotation by end of year

The Pittsburgh Pirates' starting rotation has easily been the team's strongest suit this year. Paul Skenes, Jared Jones, and Mitch Keller have been a formidable trio, and arguably the best 1-2-3 punch in baseball. Bailey Falter has been better than anyone expected him to be. While injuries have made the fifth spot of the rotation a bit more shaky, with the Pirates rotating starters in and out and utilizing bullpen games, there's no doubt the Pirates' rotation is one of the better ones in baseball.

With Martín Pérez struggling badly in his most recent outing (and the fact he is a rental), it's not out of the realm of possibility the Pirates push him to the bullpen, especially with some of the talent on the 40-man roster. They have a lot of arms in place who have a very real chance of ending up as starters for the Pirates by the end of this season, let alone by the All-Star break.

5 Pirates who could end up in the starting rotation later this year

Braxton Ashcraft

Braxton Ashcraft could join the Pirates' rotation right now if they wanted. He's on the 40-man roster, is already 24, was recently promoted to Triple-A, and has continued his outstanding season after being elevated. There's an outside chance Ashcraft makes his debut before the All-Star break. He could be a huge addition to the Pirates' rotation down the line.

So far this year, Ashcraft has thrown 69 innings between Altoona and Indy, working to a 3.00 ERA, 3.06 FIP, and 1.07 WHIP. He has a quality 25.8% strikeout rate and 0.78 HR/9 but has been one of the best pitchers at limiting walks. He has a 4.3% walk rate, which is the 14th lowest among any minor-league arm who has started at least ten games.

Ashcraft regularly sits 94-96 MPH with his fastball and can carry above-average velo late into games. Both his slider and curveball are above average pitches. He'll also mix in a changeup from time to time. Over the last two years, his command has gotten better and better, with walks almost never being a problem. He's had just one outing since the start of 2023 where he's allowed at least three walks, and has never allowed four in a game.

The question that remains is whether the Pirates will use Ashcraft as a starter or reliever when they call him up. There's no doubt in my mind that they view him as a long-term starting pitcher, but he's already reached a career high in innings pitched as a pro pitcher. May of this year represented the first time he pitched at least six innings in a game since 2019. Regardless, there's still a chance he will see some starts in the major leagues in the second half of the season.

Marco Gonzales

The Pirates acquired Marco Gonzales this offseason from the Atlanta Braves in hopes he could add some stability to the back of their starting rotation. He more than served his purpose through the first half of April; he looked like a significant addition, but then landed on the IL in mid-April, where he's been for most of the year. Luckily, he could soon return to help out the back of the Pirates' rotation now.

Gonzales only made three starts before hitting the IL, but was quite effective in those three outings. He pitched 17 innings with a 2.65 ERA, 3.51 FIP, and 1.18 WHIP. He's never been one to strike out many batters, and his 15.9% K% isn't out of the ordinary for him, but Gonzales only allowed one homer with a 7.2% walk rate.

Gonzales has a history of being a solid and durable arm. The last two years have been pretty injury-riddled, but from 2018 through 2022, Gonzales made 131 starts, pitched 765 innings, and had a 3.94 ERA, 4.35 FIP, and 1.24 WHIP. He was one of just seven other pitchers with at least 130 games started and an ERA under 4.00.

The Pirates aren't likely to trade Gonzales unless he's included in a larger package to get another bat. The Pirates have the option to bring him back for 2025 if they think he will fit into their rotation, and for an affordable $12 million, too. At the very least, they'll hold onto him for now and reassess where they are at the end of the season.

Luis Ortiz

Luis Ortiz has looked great so far this season. The former top prospect has mostly worked out of a long relief role, but over the last month, the Pirates have been building up his workload. They've been doing so mainly out of necessity, but it's opened the door for a potential return to the starting rotation. This time, he merits an extended look.

Ortiz has tossed 53 innings so far in 22 games, including one start, which was his most recent outing. Ortiz has a 3.23 ERA, 3.52 FIP, and 1.23 WHIP during that time. He's been good at limiting walks (with an 8.1% BB%) and home runs (clocking in with a 0.51 HR/9). But Ortiz has not struck out many batters. He has a sub-20% K% at 19.3%. However, even though he's been asked to pitch more and more innings at a time in June, his numbers have only gotten better.

Ortiz has a 3.22 ERA, 3.02 FIP, and 1.21 WHIP in June. He's been next to allergic to walks with a 2.2% walk rate. So far, that's the fourth-lowest BB% among any pitcher with at least 20 frames tossed this month. Ortiz is also nearing the league average with a 21.4% K% during June. He's also been good at limiting homers with an 0.81 HR/9 and 47.8% ground ball rate. It's not like this is him getting lucky in a small sample size, either. He has a 3.28 xFIP and 3.13 SIERA.

Although Ortiz isn't throwing 98-100 MPH four-seamers and sinkers like he was in 2022, he is throwing with more movement. His sinker has gained three inches of drop, while his slider has seen a two-inch increase in horizontal break. It's not like he's a soft-tosser, either. His sinker and fastball still sit 95-96 MPH and are in the 75th percentile of velocity. With better command, it makes sense why he's been so effective this year.

Ortiz has finally looked like that promising pitcher we saw in 2022. He's been dominant in June, and with how they've been building up his workload, it could easily be sooner rather than later that we see him start getting the ball more regularly to start games. 

Quinn Priester

When the Pirates ran into some injuries earlier this year, Quinn Priester was their go-to guy. Heading into the 2024 season, he was seen as the sixth starter on the 40-man roster. He's missed the last few weeks due to injury, but is back in action and could soon be an option for the Bucs' big-league rotation.

Priester's numbers on the season aren't great. He has a 4.81 ERA, 5.72 FIP, and 1.55 WHIP through 31.2 innings pitched. His K% is well below 20% at 13.8%, and he's allowing nearly two home runs every nine innings with a 1.99 HR/9. That's about as "nearly two" as you can get. On the plus side, he's done great at limiting walks with a 6% BB% and is still inducing a ton of ground balls with a 60% GB%.

But Priester's underlying numbers are more promising. He has a 4.19 xFIP and 4.27 SIERA. While neither ERA estimator is overly ambitious in his performance, both paint him as what you'd expect from a back-of-the-rotation arm. His four-seamer and sinker have shown much more movement than they did last year, and while his slider has lost some movement, he's throwing it slightly harder.

Priester also has fared well at Triple-A. He has tossed 28.2 innings for Indianapolis, resulting in a 3.45 ERA, 2.72 FIP, and 1.15 WHIP. The former first-round pick is striking out just over a quarter of the batters he's faced with a 25.6% K%, a strong 6% walk rate, and 0.31 HR/9.

Priester certainly hasn't pitched poorly this year. He's provided back-of-the-rotation-caliber production for the Pirates when he has pitched. Priester will definitely be an option for the Pirates' rotation in the second half of the season. He might not be the first option, but definitely someone the Pirates could rely on if need be.