Soderstrom isn't in the Athletics' lineup for Friday's game against the Astros.

Friday will mark the third straight game Soderstrom has been left out of Oakland's starting lineup, though he has entered as a pinch hitter in each of the last two contests. J.D. Davis will get the nod at first base once again while Soderstrom sits.

Santana is not in the lineup for Friday's game against Texas.

Santana will sit for the third time in the month of May. Alex Kirilloff will move to first base and bat sixth in place of Santana.

Davis went 2-for-6 with a two-run home run in an extra-innings win over the Rockies on Thursday.

Davis gave the Athletics a serious boost in the eighth inning when he left the yard with Seth Brown aboard and Oakland down by three. Half of Davis' four homers on the season have come in the last three games, and with hits in each of those contests, he's pushed his OPS (.618) to its highest point since May 8.

Mountcastle went 4-for-5 with a double and two runs scored in Thursday's win over the White Sox.

Mountcastle recorded hits in each of his first four at-bats, marking only the second time this month in which he's scored two runs in a contest. The first baseman saw his batting average jump 16 points with his fourth multi-hit performance this month, though he hasn't driven in a run since May 8. Mountcastle is also yet to draw a walk in May while striking out 17 times.

Guerrero went 2-for-5 with a double, a two-run home run and two runs scored in Thursday's win over the Tigers.

Guerrero went hitless in his first three at-bats before sending Danny Jansen to third with a double in the top of the eighth inning. The first baseman wasn't done there, however, adding a two-run homer in the following frame as the Blue Jays blew out the Tigers 9-1. It marked Guerrero's seventh multi-hit game this month, and he's batting .371 in May with two homers, 13 RBI and 12 runs scored. The long ball was his first since May 5 against the Nationals.

Soderstrom is out of the lineup for Thursday's game against the Rockies.

Soderstrom had started each of the previous six games against right-handers, but he'll begin Thursday's contest on the bench as the Athletics take on righty Ryan Feltner. Soderstrom sports a .689 OPS and 42.1 percent strikeout rate in 11 contests with the big club this season. J.D. Davis will cover first base Thursday in Soderstrom's stead.

Diaz went 1-for-5 with a solo home run and an additional RBI in Wednesday's 8-5 loss to the Red Sox.

Diaz knocked in a run with a groundout in the second inning and added a solo shot in the ninth. He's up to four homers this season, three of which have come in his last 12 games, a span in which he's hitting .313 (15-for-48). The infielder is slashing .255/.321/.360 with 25 RBI, 22 runs scored, no stolen bases and nine doubles over 50 contests this season. Diaz had a career-high 22 homers in 2023, but that was an anomaly for him from a power standpoint -- he's much more of a contact-first hitter.

Soderstrom is not in the lineup for Wednesday's game versus Colorado.

Soderstrom started the previous three games but will sit Wednesday as lefty Austin Gomber pitches for the Rockies. J.D. Davis will handle first base and bat fifth.

Smith will start at first base and bat sixth Wednesday versus Tampa Bay, Chris Cotillo of The Springfield Republican reports.

Smith was originally scheduled to have Wednesday off, but he will now step in with Garrett Cooper battling a shoulder injury. Smith is slashing just .182/.224/.234 through 58 plate appearances this season, though he has recorded a base hit in six of his last eight games.

Cooper was scratched from Boston's lineup prior to Wednesday's game against the Rays due to right shoulder discomfort, Chris Cotillo of The Springfield Republican reports.

The severity of Cooper's injury isn't immediately apparent, but it's bothering him enough to keep him from playing Wednesday. Dominic Smith will enter the lineup to cover first base, meanwhile Cooper will have an extra day to rest Thursday before potentially returning Friday against the Brewers.