Harris (oblique) opened a rehab assignment at Triple-A Las Vegas and went 1-for-3 with a stolen base while playing seven innings at third base in a 9-4 loss to Reno.

Harris didn't play in any Cactus League games after Feb. 26 due to a left oblique strain that resulted in him opening the season on the 10-day injured list, but after he was recently able to take part in some simulated games at Athletics camp in Arizona, he was given the green light to head out on a rehab assignment. The 26-year-old may need only a few games at Triple-A to prove his health, but since he doesn't appear to have a path to a spot on Athletics' active roster at the moment, Harris could be optioned to Las Vegas once he's reinstated from the IL.

Maton went 1-for-3 with a solo home run Sunday against the Angels.

Maton started for the second consecutive game at designated hitter, as Andrew Benintendi shifted back to his traditional position in left field. Maton also took over the leadoff spot Sunday and began the home half of the first inning with his first homer of the season. He's a .204 hitter across 518 career plate appearances in the majors, though he has an 11.4 percent walk rate and .150 ISO, which could combine to give him some appeal in very deep formats that reward on-base percentage.

Manager Brandon Hyde said after Sunday's 3-1 loss to the Blue Jays that Westburg was available for the contest only if an emergency situation had arisen, Matt Weyrich of The Baltimore Sun reports.

The 26-year-old's absence from the lineup was presumed to be a rest day, but there was apparently an unspecified issue that prevented him from taking the field. Westburg is expected to be back in the lineup Monday against the Red Sox, per Weyrich, so the infielder doesn't appear to be tending to a serious concern.

Polanco is out of the lineup for Sunday's game against the Athletics.

Dylan Moore will pick up a start at third base in place of Polanco, who occupied the hot corner for each of the Mariners' first three games of the season. Polanco recorded at least one hit in each of those contests, going 5-for-10 with a home run and three RBI.

Smith (quadricep) is out of the lineup for Sunday's game against the Red Sox.

Smith exited Saturday's contest after sustaining a quad contusion on a collision with the fence in foul territory, and he'll step out of the lineup for at least one game. According to Shawn McFarland of The Dallas Morning News, the Rangers are optimistic Smith will return to action Monday in Cincinnati. If he's cleared to play in the series opener versus the Reds, Smith could move into a full-time role at third base in the short term after Josh Jung (neck) was placed on the injured list Sunday.

Maton will start at designated hitter and bat leadoff in Sunday's game against the Angels.

Maton will serve as the White Sox's DH for the second day in a row, with both of those starts coming against right-handed pitching. At least until the White Sox get Josh Rojas (toe) or Mike Tauchman (hamstring) back from the injured list, Maton is getting a look as a strong-side platoon player.

Manager Stephen Vogt said imaging on Ramirez's right wrist came back negative, and the third baseman could be available as a pinch hitter Sunday against the Royals, Tim Stebbins of MLB.com reports.

The 32-year-old suffered a right wrist sprain on a slide while attempting to steal a base Saturday, but he's avoided a serious injury and may be available off the bench Sunday. Ramirez could return to the lineup as early as Monday in San Diego, though he could miss another day or two, with Vogt noting that the Guardians "want to be super cautious" so that the star third baseman's injury "doesn't turn into something that's going to linger."

Caminero is out of the lineup for Sunday's game against the Rockies, Ryan Bass of FanDuel Sports Network Sun reports.

Caminero went 4-for-9 with a double and a run scored in the first two games of the season but will hit the bench for Sunday's series finale. Jose Caballero will instead start at third base and bat seventh.

The Rangers recalled Ornelas from Triple-A Round Rock on Sunday, Shawn McFarland of The Dallas Morning News reports.

Texas will bring Ornelas aboard to provide some extra infield depth while Josh Jung (neck) is on the injured list. Jung's absence is unlikely to open up regular at-bats for Ornelas, as Josh Smith (quadricep) and Ezequiel Duran will be ahead of him on the depth chart at third base.

Westburg is out of the lineup for Sunday's game against the Blue Jays, Roch Kubatko of MASNSports.com reports.

He hasn't suffered any reported injuries through the Orioles' first three games, so manager Brandon Hyde seems to be giving the 26-year-old infielder a planned day off for the series finale in Toronto after Westburg went 6-for-13 with three solo home runs, a walk and an additional run to begin the season. Jackson Holliday will slide over from shortstop to fill in at second base.