5 older free agents the Pirates should sign this offseason

Baseball's biggest stars are young guns. But while the sport is a young man's game, plenty of players still remain very effective, even as they enter their mid- or late-30s. The Pittsburgh Pirates should be open to adding any free agent who can make an effective impact this offseason, even if they are getting older.

There are a handful of free agents on the market the Pirates should seriously consider pursuing, but these five fall into the oft-overlooked "age-35 season or older" category approaching the 2025 campaign.

5 older free agents the Pittsburgh Pirates should sign this offseason

Kirby Yates

Kirby Yates was already a late-bloomer, breaking out in his age-31 season in 2018, but he became one of the best relief pitchers in baseball between '18 and '19 with the San Diego Padres. Yates then missed a large chunk of time across the next three years, only managing to toss 11.1 innings from '20-'22.

Yates pitched over 60 innings once again in 2023 with mediocre numbers. Although he had a decent ERA (3.28) and K% (31.5%), he struggled with free passes with a 14.6% walk rate, and allowed a high degree of homers and contact quality, clocking in with a 1.34 HR/9 rate and 10.6% barrel rate. The Texas Rangers still decided to give Yates a shot, which ended up being a huge bargain for the 2023 World Series winners.

Yates owned a 1.17 ERA, 2.50 FIP, and 0.83 WHIP across 61.2 innings in 2024. He improved his K% to 35.9% and his walk rate to 11.8%, but more importantly, he induced a lot better contact. Yates' opponent exit velocity was just 87.5 MPH, among the 81st percentile of hurlers, and his barrel rate was elite at 4.1%, which sat in the 95th percentile.

Now, Yates did benefit from a .211 batting average on balls in play, but nearly every metric says he was still a great pitcher, even with some good batted-ball luck. Yates had a 3.10 xFIP, 2,85 SIERA and was in the 100th percentile of both xERA (1.81), xBA (.145), and xwOBA (.211). It is also the second time he has put up a sub-2.00 ERA in his career.

MLB Trade Rumors estimates Yates will earn a one-year contract worth $14 million. That's similar to what the Pirates handed Aroldis Chapman last year, who is also of similar age. Chapman was in his age-36 campaign this past year, while Yates is heading into his age-38 season. This is the kind of high-leverage arm that would significantly improve the Pirates' bullpen.

Andrew Kittredge

Andrew Kittredge is another older reliever the Pirates should set their sights on. The division rival St. Louis Cardinals acquired Kittredge last offseason from the Tampa Bay Rays. Although the right-hander was a former All-Star, Kittredge missed a good portion of 2022 and 2023, but he rebounded in a big way in 2024.

Kittredge pitched over 70 innings, notching 70.2 frames while working to a 2.80 ERA, 3.96 FIP, and 1.13 WHIP. He had an above-average 23.3% strikeout rate, along with a quality 7% walk rate. Kittredge was prone to the home run occasionally, with a HR/9 of 1.27. Underlying numbers also suggest Kittredge is a solid pitcher with a 3.64 xFIP and 3.50 SIERA.

Kittredge's stuff plays at a high level, and he earned a 116 Stuff+ rating last season. However, a big positive from his campaign was his ability to work effectively in higher leverage. He recorded 37 holds, which was the second-most in baseball. Kittredge's leverage index was 1.72, which was the 25th best among relievers this season with at least 50 innings pitched out of the pen. 

But he was one of the few set-up men with that high of a leverage index. He, along with Hunter Harvey, David Robertson, Yennier Cano, and Ryan Pressley, had a leverage index of 1.70 or greater while recording fewer than 10 saves. Despite his high hold total, he only ended up closing out a single game this year.

MLB Trade Rumors sees Kittredge making $14 million over two seasons for an AAV of $7 million. Next year will be his age-35 campaign, making him just old enough to appear on this list. Not only would the Pirates be adding a decent and affordable set-up man to their bullpen by signing Kittredge, but they'd also be taking one away from the St. Louis Cardinals. 

Andrew Chafin

The Pirates have very little lefty pitching depth in their bullpen. Joey Wentz currently projects to be their only lefty bullpen arm. Luckily, one of the more underrated lefty relievers in the game recently became a free agent in Andrew Chafin. Chafin's season had some mixed numbers, but he has consistently been a decent reliever throughout his career.

Chafin opened the season with the Detroit Tigers, where he had a strong 3.16 ERA, 2.54 FIP, and 1.38 WHIP in his first 37 innings. Chafin's walk rate was just a hair under 10% at 9.9%, but he struck out a whopping 30.9% of opponents. He was also great at limiting homers, posting an 0.49 HR/9 and 6.3% barrel rate.

Chafin was then shipped to the Texas Rangers at the trade deadline, but his numbers took a sharp decline, as he put up a 4.19 ERA, 5.44 FIP, and 1.66 WHIP in 19.1 innings. Chafin's peripherals also looked much worse. His K% was 23.8%, while his walk rate clocked in at a horrendous 17.9%. Chafin became very home run prone with a 1.40 HR/9 rate. His only silver lining was his barrel rate, which remained constant at 6.1%.

Chafin will be in his age-35 campaign next season. The long-time Arizona Diamondbacks southpaw still recorded a dozen holds this past season, and is no stranger to working in higher leverage. Chafin should be affordable and is definitely someone who would improve the Pirates' bullpen, especially given he is a lefty, something the Pirates do not possess.

Donovan Solano

The lone position player on today's list, Donovan Solano, hasn't had a bad season with the bat since 2019. At his worst, he's still remained a roughly league-average hitter, posting at least a 99 wRC+ with a batting average no lower than .280 since returning to Major League Baseball. 2024 was more of the same for the veteran infielder.

Solano took 309 plate appearances for the San Diego Padres while batting to a .286/.343/.417 triple-slash. The veteran infielder only had a 7.1% walk rate but struck out at an above-average 21% rate. Solano has never hit for much power, but he had a career-high eight homers and a .131 isolated slugging percentage. This all culminated in a .333 wOBA and 118 wRC+.

Defensively, Solano is a playable, albeit unimpressive, corner infield defender. He had zero defensive runs saved, but -3 outs above average in 418.1 innings between third base and first base in 2024. Solano has experience up the middle, but hasn't played the keystone regularly since 2021 and hasn't played shortstop semi-frequently since 2019.

Solano had yet another decent season, but had some worrying signs are under the hood. His 87.3 MPH exit velocity and 3.7% barrel rate were both career-worsts. His .310 xwOBA, .388 xSLG%, and .259 xBA are also the worst marks he has ever put up in any season of 300+ plate appearances. Solano is also entering his age-37 season.

Solano has some red flags, but his track record speaks for itself. Solano had to settle for a minor-league contract last season, and he was coming off arguably a better season with the Minnesota Twins. Solano will likely have to settle for a similar contract this offseason, and if that happens to be the case, he could provide a decent part-time option for the Pirates on the infield corners.