In Saturday's non-televised game against the Texas Rangers, infielder Luis Urías exited early after injuring himself while running the bases. Reports came in quickly that Urías strained his left quadriceps muscle. After the game, manager Craig Counsell told reporters in Arizona that they'd know more about the severity of the injury come Sunday morning after some tests were performed. The results of those efforts ended up being that Urías will be out at least two weeks which puts his Opening Day start in jeopardy.
If all that has you asking "Who's on Third?" and you respond to yourself with the classic "I Don't Know", you're in the right spot.
I won't get into all of the why in this space today, but the immediate options as to who could play third for the Brewers until Urías returns to the lineup include last season's surprise Jace Peterson, new Brewer and natural third baseman Mike Brosseau (who was acquired via trade from the Tampa Bay Rays before the owners' lockout), and 2021's utility man and frequent optionee Pablo Reyes.
The Brewers hope that they know what they've got in Peterson. He was a strong contributor at the plate when called upon in 2021, despite being available more than once to every other team in the league. If Peterson approximates the same level of offensive output in 2022, he'd be very viable as strong side of a platoon until Urías is ready.
The soft side of that platoon would then come in the form of Brosseau who general manager Matt Arnold brought over in part because of his demonstrated ability to mash against left-handed pitching, an area of weakness for the Milwaukee offense last year.
Backing them up -- likely at Triple-A Nashville to open the season unless the league decides to expand April rosters due to the shortness of this Spring Training -- would be Reyes.
They're covered at the hot corner, is my point. Urías can take his time and make sure he's healthy before he gets back on the field.