LG Twins starting pitcher Lachlan Wells pitches against the Kiwoom Heroes during the clubs' Korea Baseball Organization regular-season game at Jamsil Baseball Stadium in Seoul, July 29. Yonhap

The Korean professional baseball league has offered a mea culpa after its oversight prevented a club from acquiring a minor league pitcher.

The Korea Baseball Organization (KBO) apologized to both the LG Twins of the KBO and the Ulsan Whales of the developmental Futures League late Wednesday, after the Twins' attempt to acquire Whales pitcher Akitake Okada fell through earlier in the day.

The Twins nearly signed Okada as a replacement for Australian pitcher Lachlan Wells, who had been pitching poorly for the past few weeks and had also been dealing with left shoulder problems.

If the move had been completed, Okada would have become the first Whales player to sign with a KBO team midseason. The Whales, competing in their first Futures League season, do not have an affiliation with any KBO club, meaning their players cannot simply be called up to the top league by a parent club like those on other Futures League teams.