Red Sox’ Eric Hosmer day-to-day with left knee contusion

Well before falling to the Braves by a final score of 9-7 in 11 innings on Tuesday night, the Red Sox lost first baseman Eric Hosmer due to injury.

In the fourth inning of Tuesday’s loss, Hosmer — who was making his Fenway Park debut as a member of the Red Sox — took a foul ball off his left knee after making contact with an inside fastball from Braves starter Charlie Morton.

Despite being in visible pain and receiving a visit from manager Alex Cora and a team trainer, Hosmer was able to remain in the game for the moment. He finished his at-bat by striking out on eight pitches, but was then replaced at first base in the top half of the fifth by Bobby Dalbec.

Hosmer, who finished the night having gone 0-for-2 in his only two trips to the plate, was later diagnosed with a knee contusion. The 32-year-old is currently day-to-day with knee soreness and is unlikely to suit up for Wednesday’s series finale against Atlanta, Cora told reporters (including The Boston Globe’s Alex Speier) Tuesday.

Since being acquired from the Padres (along with minor-leaguers Max Ferguson and Corey Rosier) for pitching prospect Jay Groome last week, Hosmer has gone 2-for-12 (.167) with two doubles, one RBI, three runs scored, three walks, and two strikeouts over four games (15 plate appearances) with the Red Sox.

It remains to be seen at this point if Hosmer will require a stint on the injured list. If he does, that could require Boston to recall fellow left-handed hitting first baseman Franchy Cordero from Triple-A Worcester. Top prospect Triston Casas may be a possibility as well, though that would necessitate a 40-man roster move.