​The Pirates kicked off their deadline moves with a late Friday-night trade that brought infielder Jacob Gonzalez and left-handed reliever Brandon Eisert from the White Sox. The deal surfaced just as the MLB Draft was about to begin, a timing consideration that made sense because the Pirates surrendered the 34th overall pick in Competitive Balance Round A along with right-handed pitching prospect Jaden Woods.
On the surface, Gonzalez and Eisert appear to be short-term stopgaps—Gonzalez to cover for Konnor Griffin at shortstop, Eisert as a left-handed bullpen option to replace Evan Sisk. But the Pirates believe there could be more to both players than meets the eye, potentially making them more significant contributors over the long run.
Let’s start with Gonzalez, a 2023 first-round pick who surged offensively at Triple-A to begin this season. Even though bullpen help was the bigger immediate need, Gonzalez stands out as the key piece in this trade. Through 53 games with Charlotte to start the 2026 campaign, he produced a dazzling .320/.422/.675 line, with 12 doubles, one triple, 19 homers, 63 RBIs, and eight stolen bases. His strong performance earned him a promotion to the majors, and the 24-year-old made his MLB debut on May 31. In 30 games with the White Sox before being optioned back to Triple-A last Thursday, Gonzalez hit .244/.323/.360 with four doubles, two homers, and 17 RBIs.
“Here’s a guy who can play short and third, and also fill in at second and first,” Pirates manager Don Kelly said of Gonzalez. “He showed real power development in Triple-A this year and performed well when he got the call to the majors. We’re excited to add him.” In the short term, Gonzalez is likely to split time with Jared Triolo at shortstop while Griffin is out. Even after Griffin returns, the Pirates see continued upside in Gonzalez based on his offensive strides this season, and they value his defensive versatility as well.
Turning to Eisert, his raw numbers don’t jump off the page. In 25 appearances (including four starts) this season, the 28-year-old went 2-1 with a 5.93 ERA. Yet he has punched out 32 batters in 27.1 innings, fitting the profile of a soft-tossing lefty with good extension that has had success in this park. Eisert has been more effective against left-handed hitters this year, posting a .174 average and a .646 OPS against them, while right-handed hitters have fared better, at .295 with an .886 OPS. A change of scenery to PNC Park could help him unlock more favorable results against both sides, including improved effectiveness against right-handed bats.
“The move to PNC Park is a big key,” Kelly said. “With the ballpark and the way the staff watches and adjusts to opponents, there’s a lot of upside for him.”
For the Pirates, adding Eisert alone won’t be enough if the team aspires to be true contenders. General Manager Ben Cherington will pivot his focus to pursuing additional bullpen upgrades after the draft, seeking more reliable options to complement Eisert and the rest of the relief corps.
In short, the trade gives the Pirates two players who could play meaningful roles in the near term and potentially beyond. Gonzalez supplies a versatile infield bat with strong on-base and power potential, plus defensive flexibility that can help absorb injuries and provide strategic options within the lineup. Eisert brings a left-handed bullpen option with strikeout potential and room to grow in a home park that may maximize his effectiveness. If both can translate their Spring Board performance into sustained major-league impact, the deal could become a more consequential component of Pittsburgh’s ongoing bid to contend.