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SEOUL — When Kenny Rosenberg walked into Gocheok Sky Dome in late May, he knew his time with the Kiwoom Heroes might be short. The American left-hander, who fell in love with South Korea during a brief stint last year, is back on a temporary contract, uncertain of his future beyond the next few starts. But as he told Yonhap News Agency, he's focused on making the most of it.

Coverage Comparison

Reports from Yonhap News Agency, South Korea's leading wire service, trace Rosenberg's journey from a delayed arrival to his recent extension. Initial coverage on May 12 detailed how a visa delay cost the Heroes more than half of his original six-week, $50,000 contract, leaving him with just a couple of starts. Later, on May 22, a feature story portrayed Rosenberg's affection for Korea, his joy at returning, and his pragmatic view of his contract. By May 28, Yonhap reported that the Heroes had extended his deal for another six weeks, and that the Kia Tigers had signed Japanese pitcher Keisho Shirakawa.

The narratives are consistent, with all three reports agreeing on the key facts: Rosenberg signed as a replacement for injured pitcher Nathan Wiles, he debuted May 16, and his contract status was uncertain. The tone shifted from neutral to more personal as Rosenberg's own words came to the fore.

Key Claims

  • Kenny Rosenberg signed a six-week, $50,000 contract with the Kiwoom Heroes on April 21 as a temporary replacement for injured starter Nathan Wiles. This is confirmed by all three Yonhap reports.
  • A visa delay meant Rosenberg did not arrive in South Korea until May 14, and he made his season debut two days later against the LG Twins. All reports confirm this.
  • Rosenberg's previous KBO season in 2025 was cut short by a hip injury, and he did not pitch for nearly a year before his return. Yonhap reports this.
  • By late May, the Heroes extended Rosenberg's contract for another six weeks, also worth $50,000. This is carried by a single Yonhap report on May 28.
  • In his first two starts, Rosenberg posted a 1.42 ERA, according to the same report.
  • Nathan Wiles, the injured incumbent, is expected to return from a shoulder injury in July. This was noted in the May 28 report.

Perspectives

Kenny Rosenberg: He told Yonhap that he loves Korea and is happy to be back playing baseball. He acknowledged that his future beyond the current contract is out of his hands, saying, "I don't know what the team has planned, but I can tell you that I love Korea and it's really nice to be back playing baseball." He also expressed a desire to be a good teammate and contribute while he can.

Kiwoom Heroes management: Manager Seol Jong-jin was cautious about Rosenberg's readiness, telling reporters that trainers would check his condition before he took the mound. The team's decision to extend his contract suggests they value his performance, as he had a 1.42 ERA in two starts.

The Kia Tigers: The team signed Japanese pitcher Keisho Shirakawa to fill their Asian quota, describing his fastball and secondary pitches as effective. They noted his prior KBO experience would help him adjust quickly.

Analysis

Rosenberg's situation highlights the KBO's temporary replacement rule, which allows clubs to sign foreign players on short-term deals when incumbents are injured for at least six weeks. The Heroes lost half of his original contract to visa delays, but the extension suggests they are satisfied with his performance.

The 2026 season is Rosenberg's second in the KBO, and he has made clear his fondness for the country. But with Wiles expected back in July, his tenure may be short-lived. For now, he's taking it start by start.

The Kia Tigers' signing of Shirakawa adds depth to their pitching staff, as the right-hander had a 1.08 ERA in Japan's independent league before his return to South Korea. He'll join their minor league team first, but the Tigers expect him to contribute soon.

As the season progresses, both teams will watch their temporary additions closely, hoping they provide the stability needed for a playoff push.