The Red Sox optioned La Sorsa to Triple-A Worcester on Monday. La Sorsa was just added to the Boston roster last week and made just one appearance, giving up a solo home run to one of the two batters he faced. The lefty reliever is being replaced on the active roster by utility player Nate Eaton, who was recalled from Worcester.
The Pirates traded La Sorsa to the Red Sox on Thursday, Ari Alexander of 7 News Boston reports. La Sorsa will be active Friday for the Red Sox while they are in New York playing the Yankees. The southpaw exercised his upward mobility clause at the end of May after attempting to use it earlier in the season. The Pirates are receiving cash considerations in return, Colin Beazley of the Pittsburgh Post-Gazette reports. The Red Sox have yet to announce who they are removing from their 40-man roster to create room for La Sorsa.
La Sorsa is expected to trigger his upward mobility clause Monday, Ari Alexander of 7 News Boston reports. La Sorsa signed a minor-league contract with the Pirates before the 2026 campaign and already once attempted to find another suitor by exercising his upward mobility clause, ultimately sticking around after he went unclaimed on waivers in late March. The southpaw has posted a 3.60 ERA and 1.12 WHIP with 21 strikeouts over 25 innings in 21 appearances, including two starts, with Triple-A Indianapolis this season. It's unclear if he'll garner much interest on the open market.