Red Sox put Isiah Kiner-Falefa (forearm) on IL

Monasterio came up with the bases loaded against Devin Williams in the ninth and worked a walk even after declining to challenge a called strike on a clear ball to begin the at-bat. That gave the Red Sox their first run before Jarren Duran tied the game with a shallow flyball. Before that, Monasterio had Boston’s only extra-base hit of the game off Zach Thornton. He’s 3-for-5 with a homer and three RBI the last two days, raising his OPS from .629 to .694. The win was Boston’s ninth in a row, with sweeps over the Angels, White Sox and Mets. It’s the first time since 1977 that they’ve gone 9-0 on a road trip.

Monasterio homered off Freddy Peralta in the fourth to start the scoring. That proved to be sufficient for Boston’s pitching staff, but the Red Sox did get some insurance in the form of another two-run homer from Masataka Yoshida in the eighth. Monasterio’s homer off Peralta was his fifth of the year but his first off of a righty; he was hitting just .195/.213/.253 in 89 plate appearances versus righties coming into the day. The triple was the second of his career and first since 2023.

Seigler was replaced by Andruw Monasterio at second base following a home-plate collision with Chicago catcher Kyle Teel while scoring on a wild pitch in the third inning. He came away with a laceration on his right arm and looked to be pretty shaken up after a head-first slide. He’ll undergo evaluation to determine whether he suffered any additional injuries on the play. There should be an update on his status after the contest.

We thought the 28-year-old Harris would likely clear waivers, but he never even got there, as a Red Sox team dealing with a few infield injuries thought it was worth picking him up. The 28-year-old Harris has hit .194/.307/.289 in 213 plate appearances since debuting for the A’s in 2024. He has options left, so the Red Sox could stash him in Triple-A. If the Red Sox were to activate him immediately, it could be at Andrew Monasterio’s expense. The return for the A’s, Hansen, was a 2024 20th-round pick. The 24-year-old has a 4.75 ERA in High-A this year.

It’s an issue that has been nagging at the versatile 31-year-old for a couple of weeks now and got worse following the cross-country flight to Seattle on Friday, so the Red Sox will take a look and see what’s going on. He’s considered day-to-day for now.

Mayer sat out on Thursday due to illness and wasn’t feeling well during the day on Friday, but he felt much better as game time approached and seemingly was able to talk his way into the lineup. He’ll start at shortstop and bat seventh with Isiah Kiner-Falefa heading back to the bench.

It doesn’t sound like Mayer is going to require a trip to the injured list, but he’s still feeling a bit under the weather on Friday. Andruw Monasterio will start at second base and bat ninth for the Red Sox while Isiah Kiner-Falefa slides over to cover shortstop once again.

Kiner-Falefa’s homer off Trey Yesavage gave the Red Sox their third run of the three-game series and was immediately followed by Caleb Durbin going back-to-back to tie the game at 3-3. The RBI was Kiner-Falefa’s first since June 3. At .277/.344/.361, he’s one of the few Red Sox hitters exceeding expectations this year. He’s actually ahead of his career-high .699 OPS from 58 games in 2020.

The Red Sox don’t seem worried about him needing an IL stint, but we have seen many players head to the injured list after a battle with back spasms. It would be unfortunate for Mayer, who has battled multiple injuries over his brief MLB career and was slashing .286/.323/.429 with one home run and six RBI over his last six games. Isiah Kiner-Falefa will start at shortstop and bat eighth with Andruw Monasterio at second base and hitting ninth.

Isiah Kiner-Falefa seems to have cooled off, so he’s taking a seat after 10 straight starts. The switch-hitting Seigler was called up Wednesday after hitting .298/.425/.471 in 30 games for Triple-A Worcester. He appeared in one of his first three games on the roster, going 0-for-2.