Red Sox Activate Isiah Kiner-Falefa, Call Up Jedixson Paez in September Expansion

Boston's September roster expansion is underway, and the Red Sox have announced two moves: Isiah Kiner-Falefa has been activated from the injured list, and right-hander Jedixson Paez has been called up to the major league roster.

Kiner-Falefa's activation adds a versatile infield option back to a Boston roster that has been reshuffled considerably over the past week. The specific nature of his IL stint — the injury itself and how long he was out — is not detailed in the club's announcement, nor is his expected role beyond his return to the active roster.

Paez's arrival carries immediate weight. Per a prior Posterior Wire report, the Red Sox selected his contract from Triple-A Worcester and slotted him in to start Tuesday's game, making his Boston debut a starting assignment rather than a late-inning cameo.

What surrounds these moves

The roster activity has been steady in Boston. Roman Anthony was activated off the IL ahead of these latest additions, while Willson Contreras was placed on the 10-day IL with a left hamstring strain — an injury he had reportedly been managing for weeks prior to the move. The club has also been managing Sonny Gray's workload with extra rest as the stretch run approaches.

What remains unconfirmed is how Kiner-Falefa fits into the lineup construction from here, and how much of a role Paez will carry beyond his debut start.